Search your library and/or graveyard for a creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle. If X is 10 or more, creatures you control get +X/+X and gain haste until end of turn.

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Whenever this creature or another creature dies, target player loses 1 life and you gain 1 life.

{T}: Add {G}. Put a -1/-1 counter on this creature: Untap this creature.

When this creature enters, you gain 2 life. Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

You can't get poison counters. Creatures you control can't have -1/-1 counters put on them. Creatures your opponents control lose infect.

When this creature enters, it deals damage equal to its power to any target. Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Sacrifice a creature: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

({T}: Add {G}.)

({T}: Add {W} or {B}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.

({T}: Add {B} or {G}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {W}.)

({T}: Add {B}.)

({T}: Add {G} or {W}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.