Callidus Assassin (Surge Foil) [Warhammer 40,000] TG15 At the beginning of the

At the beginning of the next end step

If it's a creature

tap Demonic Hordes and sacrifice a land of an opponent's choice

Volcanic Eruption deals damage to each creature and each player equal to the number of Mountains put into a graveyard this way

there's an additional combat phase followed by an additional main phase

Callidus Assassin (Surge Foil) [Warhammer 40,000] TG15 At the beginning of theSet: Warhammer 40,000 Type: Creature Human Shapeshifter Assassin Rarity: Rare Cost: {4}{U}{B} Flash Polymorphine You may have Callidus Assassin enter the battlefield tapped as a copy of any creature on the battlefield, except it has When this creature enters the battlefield, destroy up to one other target creature with the same name as this creature.