Ring of the Teacher

Equip {2}{u}

Affinity for Clues (Your Clue tokens may help you
pay for this card. Tap any number of Clue tokens
you control to pay {1} for each tapped.)

Equipped creature gets +1/+1 and "When this
creature deals combat damage to a player, that player
shows you their hand. Pick a card from their hand.
That player then discards that card."