Yennefer, Storms Eminence

: Whenever a creature you control with deathtouch deals damage to a player or planeswalker, put a +1/+1 counter on that creature.
-2: Create a 1/1 black assassin creature token with deathtouch and "Whenever this creature deals damage to a planeswalker, destroy it.
: (Vraska, Swarms Eminence)