mtg arena non format cards What Are The Magic: The Gathering Formats? All Uncraftable Cards on Arena!

8,703 as card (0.23%) Atemsis, All-SeeingAtemsis, All-Seeing provides a direct way to end an opponent's game when it deals damage to them, but has a notable drawback of requiring six cards with different mana values in your hand

Intrigued about which those may be

Underworld Hermit

In addition to the Circle of Protection cycle, White also gives us a five-colour Scarab cycle, with essentially an identical buff that reacts to the enemy controlling a type of colour

However, it is a strong card in its own right that can leave one opponent open to multiple attack steps, something Cyclonic Rift doesnt do since it sets all your opponents back

But it was still dominant