Dark King Mechikabura, Imminent Annihilation (BT18-129) [Dawn of the Z-Legends Pre-Release Cards]

Product Details

[Overlord][Once per turn]
[Auto][Limit 1] When this card attacks, use up to from your 1 “Demon Realm Race” or “Demon God” card—both mono-black and without [Super Combo]—from your Warp in a combo.
[Activate:Main] (-), if your Leader is a black “Demon Realm Race” card and there are 6 or more cards in your Warp : Play this card from your hand.