The Scarab God [Hour of Devastation] BW74 you can Special Summon 1

you can Special Summon 1 Dragon-Type monster except "Red-Eyes Darkness Metal Dragon" from your hand or Graveyard

return that card to the battlefield under your control

the Mutable becomes a Human with base power and toughness 1/1

using monsters from your hand or your side of the field as Fusion Materials

The Scarab God [Hour of Devastation] BW74 you can Special Summon 1Set: Hour of Devastation Type: Legendary Creature God Rarity: Mythic Cost: {3}{U}{B} At the beginning of your upkeep, each opponent loses X life and you scry X, where X is the number of Zombies you control. {2}{U}{B}: Exile target creature card from a graveyard. Create a token that's a copy of it, except it's a 4 4 black Zombie. When The Scarab God dies, return it to its owner's hand at the beginning of the next end step.