Sea of Lava

This land enters the battlefield tapped unless you control a swamp or a mountain.
{t}: add {r} or {r}
Whenever you play a creature card, you may pay
2 life. if you do, it enters the battlefield
with a +1+1 counter and haste.
Sacrifice a creature: It deals equal to its power to
any target.
Sacrafice a land: add {r}{r}{r}{r} or {b}{b}{b}{b}
Pay X life: Return target creature with converted
mana cost X to your hand.