undefeatable yugioh deck Complete Custom for Yu-Gi-Oh! GX yugioh crazy deck Opening OLD

Here is a rules breakdown, with Xenograft as an example

Legendary Creature - Eldrazi Kozilek's Unsealing Devoid (This card has no color.) Whenever you cast a creature spell with mana value 4, 5, or 6, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this token: Add ." Whenever you cast a creature spell with mana value 7 or greater, draw three cards

Crusadia Equimax gains the ATK of all monsters that it points to, which synergizes directly with many of the main deck Crusadia monsters because those cards can be special summoned to a zone that a link monster points to

Yorion is passable in the 40 as well although not the most exciting