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 - [Extended Art] Strixhaven: School of Mages (STX)](http://cdn.shopify.com/s/files/1/0147/6729/2516/products/584a3d18-0360-48aa-87d2-51e9078b00f5_933d0e2d-9ffc-485f-bc28-37fed2e30377_{width}x.jpg?v=1624657184)
![Sparring Regimen - [Extended Art] Strixhaven: School of Mages (STX)](http://cdn.shopify.com/s/files/1/0147/6729/2516/products/584a3d18-0360-48aa-87d2-51e9078b00f5_933d0e2d-9ffc-485f-bc28-37fed2e30377_530x@2x.jpg?v=1624657184)