The Swarm

Nonbasic landwalk, Shroud

When The Swarm enters the Battlefield If it was cast you may search your Library for up to X cards named Templar Knight, Slime against Humanity, Shadowborn Apostle, Relentless Rats, Rat Colony, Persistent Petitioners, Seven Dwarves, Nazgul, Hare Apparent, or Dragon's Approach then lose twice X life.

Whenever you cast a spell with one of the above names you may put a land from your hand onto the battlfield tapped if you don't you may draw a card. This effect can only trigger