ultimatum cards mtg Ruinous Return any number of permanent cards with different names from your graveyard to the battlefield. Emergent Ultimatum | Ikoria: Lair

On the front side, it serves as another snap include for Legendary-matters decks

So you pay the cost, see the card, and respond to it with more activations, eventually killing your opponent with that activation (and possibly some others) on the stack

With an Ingenious Artillerist on the battlefield and a go-wide opponent at the table, this can just win for 2 mana

Each one has a strong questing value that forces opponents to challenge or risk falling behind, and then once challenged and/or banished, their effects activate drawing you cards, forcing opponents to discard or return a character to their hand, and more

Ill show you what I mean