Leshrac, Walker of Night

+1: Put a +1/+1 counter on target creature you control. Creatures you control with +1/+1 counters on them have Swampwalk.
-3: Destroy target creature or land.
-6: You get an emblem that says "all lands are swamps in addition to their other types. Swamps you control have: tap to deal 1 damage to any target."