Vashta Nerada

Deathtouch
Possess {1}{b} (Whenever a nontoken creature dies, you may return it to the battlefield under your contol and put Vashta Nerada from your hand onto the battlefield enchanted to the creature for its possess cost)
If Vashta Nerada is enchanted to a creature, that creature gets +2/+3 and deathtouch
If enchanted creature dies, you may return Vashta Nerada to your hand