However Rotpriests ability doesnt care who targets your creatures, allowing you to fire off multiple, cheap spells and win the game
Finally, the first two get Canceled, but the third one resolves, as your opponent is tapped out
The -2 is a flexible card draw engine that scales once graveyards fill up, especially alongside cards like Maddening Cacophony or self-mill action
Itll give you clues for creatures leaving, sure, but also if your Ozolith gets blown up, or a Planeswalker is retired
Whenever you discard a card, target creature an opponent controls gets -X/-0 until your next turn, where X is the number of different mana values among cards in your graveyard