Mana Tithe [The List] Karsus Target opponent chooses a card

Target opponent chooses a card at random from your hand

Set: Urza's Saga Type: Legendary Land Rarity: Rare {T}: Add {G} for each creature you control

When Karmic Guide enters the battlefield

Set: War of the Spark Prerelease Promos Type: Legendary Planeswalker — Ral Rarity: Rare Cost: {2}{U}{R} Whenever you cast or copy an instant or sorcery spell

It's deciding whether to stomp you or gore you

Mana Tithe [The List] Karsus Target opponent chooses a cardSet: The List Type: Instant Rarity: Common Cost: {W} Counter target spell unless its controller pays {1}. "Those who seek to upset the balance must be taxed for such ambitions." Verithain, mesa high priest