Kalista the Spear of Vengeance

Ward {4}, trample
When an ennemy creature deals damages to you
or an allied player, Khalista the Spear of
Vengeance deals 3 damages to it.
If this kills the creature, exile it and put a +1/+1 counter on Khalista the Spear of Vengeance.
"Turncoats, oath breakers and betrayers... we hate
them all."