Solen, Arisen Necromancer

Hexproof, Undead 3
Eminence-When a creature you control dies
it gains undead X where X is half of the converted
mana cost of the creature this effect can be used
from the command zone.
Zombies gain deathtouch.
[A card with undead may be cast for its undead
cost it is placed on the bottom of your deck if it
leaves the field].