Oracle

Instant - Trap 

If an opponent had three or more cards put into their graveyard from anywhere this turn, you may pay 0 rather than pay this spell's mana cost.
Exile all cards from target player's graveyard.

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

8/7/2020
To determine the total cost of a spell, start with the mana cost or alternative cost you’re paying (such as Ravenous Trap’s alternative cost), add any cost increases, then apply any cost reductions. The converted mana cost of the spell remains unchanged, no matter what the total cost to cast it was.

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