Structure Deck: Mechanical Mayhem

Structure Deck: Mechanical Mayhem (known as  STRUCTURE DECK(ストラクチャーデッキ) -機械的騒乱- in the FOCG) is a fan-made Structure Deck. This Deck follows Structure Deck: Tidal Chaos and is followed by Structure Deck: ???.

==Features== This ??-card deck focuses on the "" series, including ? new cards. It also includes ? Enhancement Packs consisted of 5 out of ? possible cards, always including ? special Ultra Rare card(s) that is native to the Structure Deck, 1 Limit Break of the Duelist, and 1 Return of the Light booster pack.

The cover card(s): ???.

Breakdown
This deck includes cards of the following rarity: The enhancement pack includes 5 cards, with ? in total of the following rarity:
 * ? Ultra Rare
 * ? Super Rare
 * ? Common
 * ? Ultra Rare
 * ? Super Rare
 * ? Common

Deck List
This deck includes:
 * (SD??-JP0??) ???

Enhancement Pack List
This enhancement pack includes:
 * (SD??-JPV??) ???