Enchantment
Creatures you control have training. (Whenever a creature you control attacks with another creature with greater power, put a +1/+1 counter on the creature with lesser power.)
At the beginning of your end step, if you control a creature with a +1/+1 counter on it that attacked this turn, draw a card.
At the beginning of your end step, if you control a creature with a +1/+1 counter on it that attacked this turn, draw a card.
