Caithe

Dream 1 (This creature enters the battlefield tapped with 1 dream counter. Creatures with dream counters don't untap during their controllers untap phase. At the beginning of your upkeep remove a dream counter from this creature)
Whenever you remove a dream counter from Caithe, or Caithe deals combat damage to a player, exile the top card from target players library.
Deathtouch.
{3}{g}: Caithe is unblockable until end of turn.
{x}{t}: Cast a card exiled by Caithe with converted mana cost of {