Sparring Regimen

Режим Тренировок (Sparring Regimen) (ru)

Enchantment (CMC 3)
When Sparring Regimen enters the battlefield, learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)
Whenever you attack, put a +1/+1 counter on target attacking creature and untap it.