Watch Corporal

Training (Whenever this creature attacks with
another creature with greater power, put a
+1/+1 counter on this creature.)
Mentor (Whenever this creature attacks, put a
+1/+1 counter on target attacking creature with
lesser power.)
Whenever Watch Corporal attacks, bolster 1.
(Choose a creature with the least toughness
among creatures you control and put a +1/+1
counter on it.)