Union monster

Copy from the Yu gi oh wikia Union Monster

Union Monsters can be recognized by the fact that, where on an ordinary Effect Monster it would read 'Effect', Union Monsters have 'Union'. Cards such as Dark Necrofear or Kiseitai act as Equip Spell Cards but do not have the text designating them Union Monsters.

Union monsters are a special type of Effect Monster with (Type)/Union in their card text. They can function like an Equip Spell Card, and thus become vulnerable to cards that destroy Spell Cards, such as Mystical Space Typhoon. They equip to the host Monster their text designates and generally grant it additional strength, such as an increase in ATK/DEF. All Union Monsters Destroy themselves to protect the host Monster if it would be destroyed by battle while equipped. The only exceptions are Heavy Mech Support Platform, Spirit of the Six Samurai, and Armored Cybern which protects the monster from destruction by both battle and Card Effects

Union Monsters can either Equip or Unequip to the host once per turn with their own Effect, given they are on the field. Additional cards, such as Formation Union and Combination Attack allow them to Equip and Unequip alternatively.

The Union Monsters introduced the XYZ Archetype (which would later become the VWXYZ Archetype), which had a new way of using their Fusion Monsters. This unorthodox method involves removing the Fusion Material Monsters from play to Special Summon the Fusion Monster from the Extra Deck (This is not considered a Fusion Summon). Polymerization cannot be used to Fusion Summon these monsters.

Here is a list of union cards:

(Cards that the union monster can equip to will be listed in parentheses after the name of each monster)

Custom Union cards Majesties' Throne + (any Majesty card)

Blade Enforcer - Jelly Man + (any LIGHT Blade Monster)

Blade Enforcer - Shark Dolphin + (any WATER Blade Monster)

Chaos Command Dragon Rider + (Chaos Command Whelp)

Blade Enforcer - Jetcopter + (any WIND Blade Monster)

Blade Enforcer - Cannon Arm + (any FIRE Blade Monster)

Blade Enforcer - Earth Kid + (any EARTH Blade Monster)

Blade Enforcer - Weird Top + (any DARK Blade Monster)

Honey Collecting Wasp + (any insect monster)

Thunder Support/Flame Support + (Thunder and Fire Dragon) Hound of Oz + (any Oz monster)

Paper Pet/Paper Pet Dragon + (Any paper monster)

Pixel HERO - Dino Mount + (Pixel HERO - Green Jumper/Pixel HERO - Red Hammer)

Otomedius Blue + (Otomedius Red)

Otomedius Red + (Otomedius Blue)

Intellegent Weapon from Eberr + (any Eberr Monster)

Wayward Whelp Shepherd + (any Dragon monster)

Raptor - Deinonychus + (any Raptor Monster)

Arcana Heart - Catherine + (any Arcana Heart Monster)

Thunderous Hound + (any Lightning Deity monster)

Gameplay and terminology

Card layout

Attribute • Property • Indicator (Level (Negative) / Rank / Link Rating / Affinity^† / Bass^† / Limit^† / Mana Count^† / Mana Energy^† / Nebula^† / Power Rating^† / Product^† / Quality^† / Stage^† / Star Cluster^† / Wavelength^†) • Card Number • Type • Ability • Pendulum Scale • Link Arrow • Esper Type^† • Evolute Currency^† • Card text • Material • Effect (Monster • Pendulum) • Flavor text • ATK / DEF (Original)

Errata • Simplified Effect Text • Problem-Solving Card Text

Rarities

Common • Rare • Super Rare • Ultra Rare • Secret Rare • Ultimate Rare • Holographic Rare / Ghost Rare • Parallel Rare • Gold Rare • other rarities...

Card types

Monster

Attributes	DARK • DIVINE • EARTH • FIRE • LIGHT • WATER • WIND TIME^† • VIRUS^†

Types	Aqua • Beast • Beast-Warrior • Creator God • Cyberse • Cyborg^RD • Dinosaur • Divine-Beast • Doomknight^RD • Dragon • Fairy • Fiend • Fish • High Dragon^RD • Insect • Machine • Magical Knight^RD • Plant • Psychic • Pyro • Reptile • Rock • Sea Serpent • Spellcaster • Thunder • Warrior • Winged Beast • Wyrm • Zombie Alchemical^† • Civilian^† • Data^† • Food^† • Ghost^† • Omega Arms^† • Pixie^†

Monster types	Normal • Effect • Non-Effect • Ritual • Fusion • Synchro (Dark^† • Accel^† • Delta Accel^† • Limit Over Accel^†) • Xyz • Pendulum • Link • Maximum^RD • Token • Spell • Trap Alloy^† • Broadcast^† • Burst^† • Chain-force^† • Chainlink^† • Chaos^† • Code^† • Composition^† • Constellation^† • Construct^† • Cosmic^† • Cross^† • Crossover^† • Dark Bind^† • Delta^† • Dreamer^† • Emblem^† • Enchant^† • Enhance^† • Esper^† • Evolute^† • Evolution^† • Extract^† • Extreme^† • Galaxy^† • Hybrid^† • HYPERFORCE^† • Imaginary^† • Legend^† • Legion^† • Maestro^† • Mana^† • Marshal^† • Master^† • Mega^† • Mirage^† • Mixmatch^† • Neon Positive^† • Nova^† • Overdrive Monster^†(Hawkatana^†) • Parallel^† • Persona^† • Plasma^† • Positive^† • Pressure^† • Quasar^† • Reactor Monster^† • Resolve^† • Reverse^† • Royal^† • Spectrum^† • Spiritual^† • Terrain^† • Timewarp^† • Transmute^† • Triad^† • Unification^† • Unity^† • Upgrade^† • Voodoo^† • Wild Card^† • Xynchro^†

Monster subtypes	Tuner Augment^† • Base^† • Catalyst^† • Chainling^† • Driver^† • Transaxle^† Special Summon

Abilities	Flip • Toon • Spirit • Union • Gemini Armor^† • Breakdown^† • Legion^† • Overlimit^† • Overload^† • Power Generator^† • Soul^† • Timeshifted^†

Spell

Normal • Continuous • Field • Equip • Quick-Play • Ritual
Blast^† • Cometshower^† • Conjoint^† • Link^† (Link Equip^†) • Splice^†

Trap

Normal • Continuous • Counter
Cometshower^† • Field^† • Conjoint^† • Ritual^† • Splice^†

Skill

Normal • Continuous • Field

Other^†

Equip • Ritual • Speed Spell (Normal • Quick-Play • Ritual)
Non-game • Character • Checklist • FAQ • Strategy • Tip

Archetype • Series • Card evolutions • Support • Anti-support

Game
mechanics

General	Match • Duel • DRAW • Surrender • LP • Counter • Damage (Battle • Piercing • Effect) • Card limits ((Deck (Minimum • Maximum) • Hand • Three-card rule) • Spell Speed • Position (Face-down • Face-up) • Battle position (Attack Position • Defense Position) • Mana Position^† • Public knowledge

Areas	Deck (Main • Extra • Side) • Field • In Play • Hand • Graveyard • Limbo^† • Attached

Zones	Column • Deck • Extra Deck • Monster • Main Monster • Extra Monster • Spell & Trap • Field • Pendulum Cross^† • Event Horizon^† • Moving^† • Rune Zone^† •

Turns	Count • Player • Phase Draw • Normal draw • Standby • Main 1 • Battle (Start Step • Battle Step • Damage Step • Damage calculation • End Step) • Main 2 • End

Actions	Owner • Possess • Control • Look • Reveal • Pick up a card • Excavate • Add a card • Draw a card • Shuffle • Cut • Random Summon • Set • Flip • Change battle position • Send • Discard • Tribute • Destroy (By battle) • Banish • Attach • Detach • Transfer • Equip • Unequip • Leave the field • Linked • Co-linked • Extra Link • Points to • Attack • Direct • Target • Replay • Battle • Activate • Pay • Declare • Target • Respond • Chain • Link • Resolve • Unaffected • Negate

Card effects

Types	Condition (Archetype • Archetype-exclusion • Level • Name • Rank • Summoning • Common • Normal • Special • Fusion • Ritual • Victory) • Cost (Maintenance cost) • Monster • Continuous • like • Ignition • Like • Quick • Like • Trigger • Like • Flip • Unclassified • Control only one • Field-Unique • Match winner • Summon monster • Unconfirmed Mandatory • Optional • Lingering • Once per turn

Speeds	Spell Speed 1 • Fast effect (Spell Speed 2 • Spell Speed 3)

Summoning

Types	Normal • Tribute • Set (Normal • Tribute) • Flip • Special • By own condition • Fusion • Ritual • Synchro • Xyz • Pendulum • Link Contact Fusion^† • Transformation^† • Double Tuning^† • Dark Synchro^† • Accel Synchro^† • Limit Over^† • Xyz Evolution^† •

Mechanics	Summoning Rules • Double Tributer • Material • (Fusion • Fusion Substitute • Synchro • Synchro Substitute • Xyz • Link) • Alloy^† • Alloy Substitute^† • Broadcast^† • Broadcast Substitute^† • Burst^† • Burst Substitute^† • Chain-force^† • Chain-force Substitute^† • Chainlink^† • Chainlink Substitute^† • Chaos^† • Chaos Substitute^† • Code^† • Code Substitute^† • Composition^† • Composition Substitute^† • Constellation^† • Constellation Substitute^† • Construct^† • Construct Substitute^† • Cosmic^† • Cosmic Substitute^† • Cross^† • Cross Substitute^† • Crossover^† • Crossover Substitute^† • Dark Bind^† • Dark Bind Substitute^† • Delta^† • Delta Substitute^† • Dreamer^† • Dreamer Substitute^† • Driver^† • Driver Substitute^† • Emblem^† • Emblem Substitute^† • Enchant^† • Enchant Substitute^† • Enhance^† • Enhance Substitute^† • Esper^† • Esper Substitute^† • Evolute^† • Evolute Substitute^† • Evolution^† • Evolution Substitute^† • Extract^† • Extract Substitute^† • Extreme^† • Extreme Substitute^† • Galaxy^† • Galaxy Substitute^† • HYPERFORCE^† • HYPERFORCE Substitute^† • Hybrid^† • Hybrid Substitute^† • Imaginary^† • Imaginary Substitute^† • Legend^† • Legend Substitute^† • Legion^† • Legion Substitute^† • Maestro^† • Maestro Substitute^† • Mana^† • Mana Substitute^† • Marshal^† • Marshal Substitute^† • Master^† • Master Substitute^† • Mega^† • Mega Substitute^† • Mirage^† • Mirage Substitute^† • Mixmatch^† • Mixmatch Substitute^† • Neon Positive^† • Neon Positive Substitute^† • Nova^† • Nova Substitute^† • Overdrive Material^† • Overdrive Substitute Monster Substitute^† • Parallel^† • Parallel Substitute^† • Persona^† • Persona Substitute^† • Plasma^† • Plasma Substitute^† • Positive^† • Positive Substitute^† • Pressure^† • Pressure Substitute^† • Quasar^† • Quasar Substitute^† • Reactor Material^† • Reactor Substitute Monster Substitute^† • Resolve^† • Resolve Substitute^† • Reverse^† • Reverse Substitute^† • Royal^† • Royal Substitute^† • Spectrum^† • Spectrum Substitute^† • Spiritual^† • Spiritual Substitute^† • Terrain^† • Terrain Substitute^† • Timewarp^† • Timewarp Substitute^† • Transmute^† • Transmute Substitute^† • Triad^† • Triad Substitute^† • Unification^† • Unification Substitute^† • Unity^† • Unity Substitute^† • Upgrade^† • Upgrade Substitute^† • Voodoo^† • Voodoo Substitute^† • Wild Card^† • Wild Card Substitute^† • Xynchro^† • Xynchro Substitute^† • Normal Summon Monster • Special Summon-only • Nomi • Ignoring the Summoning conditions

Other

Activation & Targeting Eligibility • Activation requirement • Difference between Costs and Effects • Chains, Activation, and Resolution • Engine (Draw) • Advantage • Card • Field • Hand • One Turn Kill (First • Zero) • Lockdown • Loop (Controlled loop • Infinite loop)

^† Does not exist in the OCG or TCG

Example[]

And here is a list of the support cards they use:

Combination Attack Frontline Base Formation Union Roll Out!