The Gitrog Monster

Burn from Within deals X damage to any target. If a creature is dealt damage this way, it loses indestructible until end of turn. If that creature would die this turn, exile it instead.

Exile any number of target creatures you control. Return those cards to the battlefield under their owner's control at the beginning of the next end step.

Flying Whenever a source an opponent controls deals damage to you or a permanent you control, you may have this creature deal 1 damage to that source's controller.

Exile target creature and all other creatures its controller controls with the same name as that creature. That player investigates for each nontoken creature exiled this way.

T: Add C. 5, T, Pay 1 life: Create a 1/1 white and black Human Cleric creature token. 5, T, Sacrifice five creatures: Transform this land, then untap it.

As this land enters, you may reveal a Plains or Island card from your hand. If you don't, this land enters tapped. T: Add W or U.

Madness XUU (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.) Gain control of target creature if its toughness is 2 or less. If this spell's madness cost was paid, instead gain control of that creature if its toughness is X or less.

Skulk (This creature can't be blocked by creatures with greater power.) At the beginning of your upkeep, you may discard all the cards in your hand. If you do, draw that many cards.