Aku Aku, Witch Doctor

Bestow {w}{b}{g}
Flying
Enchanted creature has +2/+3 and deathtouch.
Whenever a creature enters the battlefield under
your control, if another creature died under your
control this turn, create a white Aura
enchantment token named Mask attached to it.
The token has enchant creature and totem
armor. This ability triggers only once each turn.