Vallen, Adept Killer

Creatures you control with converted mana
cost 4 or less have deathtouch.
Creature cards in your library and graveyard with
converted mana cost 4 or less have deathtouch.
Whenever another creature you control with
deathtouch dies or is put into exile from the
battlefield, return target creature card with
deathtouch from your graveyard to the
battlefield tapped.