Ejiek, Deadly Stalker

Deathtouch
Whenever a creature you control dies, you may
pay 1 life. If you do, manifest the top card of
your library. (Put it onto the battlefield face down as
a 2/2 creature. Turn it face up any time for its mana
cost if it's a creature card.)
Whenever a manifested creature you control is
turned face-up, create a 1/1 Assassin creature
token with deathtouch.