12th Clan Warrior

Shasi: Summon 2 1/1 Green Wolf creature tokens, Summon a 1/1 Green Wolf creature token. (If this creature destroys another creature, it activates the first part of this ability. Further kills activate the second part)
When 12th Clan warrior is declared as an attacker,
a target Wolf creature token gains +1/+1.

The howl called the clan...