River Sneak

Raid — At the beginning of your end step, if you attacked this turn, reveal the top card of your library and put that card into your hand. You lose life equal to the card's mana value.

Menace, deathtouch When this creature enters, each player loses a third of their life, rounded up.

Whenever this creature or another creature you control enters, you gain life equal to that creature's toughness.

At the beginning of combat on your turn, you may have target Vampire get +2/+0 until end of turn.

Pay 2 life: This creature gains flying until end of turn. Pay 2 life: This creature gains vigilance until end of turn.

(T: Add U.)

Flying When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

This creature can block an additional creature each combat.