Rainbow Beast

Rainbow Beasts are a archtype of monsters who focus on summoning "Crystal Dragon." that's done by having 7 different Rainbow Beasts on the field on in your Graveyard. Five of the rainbow Beasts have the ability to equip to your opponent's monsters after they're destroyed by battle. The equipped monster loses 1500 ATK and DEF, making it really vulnerable. The other two are Union monsters and equip to other Rainbow Beasts to power them up.

Cards

"Rainbow Beast Red Samurai"

"Rainbow Beast Orange Minotaur"

"Rainbow Beast Yellow Tiger"

"Rainbow Beast Green Hawk"

"Rainbow Beast Blue Crab"

"Rainbow Beast Purple Malicious"

"Rainbow Beast Silver Cannon"

"Crystal Dragon"

OTK

You can OTK with "Rainbow Beast Blue Crab" by Special Summoning it your opponent's side of the field and playing "Pot of Greed" and other cards that let you draw cards from your deck, because every time you draw a card from your deck, it inflicts 1000 damage to your opponent.