Agonizing Remorse

Sorcery

Target opponent reveals their hand. You choose a nonland card from it or a card from their graveyard. Exile that card. You lose 1 life.

"Guilt is not absolution. Regret is not justice. But it is right that you suffer."
—Extus Narr

2020-01-24 If there are no nonland cards in their hand and no cards in their graveyard, then you just lose 1 life.
2020-01-24 If you choose a card from their graveyard, it may be a land card.
2020-01-24 No player may take actions between the time you choose a card and the time it's exiled.
2020-01-24 You must choose a card to exile if able. If there are no nonland cards in the opponent's hand, you must exile a card from their graveyard, and vice versa.

mtg.wtf