At two points in my last game, my opponent played Invoke Despair. Both times, after the normal effects of the card, my opponent was able to return a creature to the battlefield from their graveyard for no cost. There was no effect that would cause this on board.
Additional details: Both times the card was played, I sacrificed a creature but had no enchantment or planeswalker to sacrifice. I believe I correctly lost 4 life and my opponent drew 2 cards, but I am unsure.
At two points in my last game, my opponent played Invoke Despair. Both times, after the normal effects of the card, my opponent was able to return a creature to the battlefield from their graveyard for no cost. There was no effect that would cause this on board.
Additional details: Both times the card was played, I sacrificed a creature but had no enchantment or planeswalker to sacrifice. I believe I correctly lost 4 life and my opponent drew 2 cards, but I am unsure.