Porsha von Trevon, Sea-Witch

Islandwalk, swampwalk.
{1}{u}{b}{r}: Exchange control of target land you control with target land an opponent controls.
Whenever Porsha von Trevon, Sea-Witch deals combat damage to an opponent, create that many Treasures.
{1}{r}, Sacrifice a treasure: Deal 2 damage to any target.