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.
![Sparring Regimen [Strixhaven: School of Mages]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/77d8c93a-e4c0-5fe7-80ff-7a4953979b08.jpg?v=1698559967&width=1445)