storm mtg card Altered Art Card-xyris, the Writhing At the beginning of each player’s upkeep Storm of Saruman

[1] This is unique to legends, as you can have any number of identical nonlegendary creatures on the battlefield

There's always a chance the opponent will simply manifest a new creature to resume the offensive, making Reality Shift a bit iffy among Commander's best removal spells

1 Horn of Gondor

1 2 3 "How four expensive cards imploded Magic: The Gathering's most popular format"

And, whats more, if you include multiple pieces of it in your deck, you somehow need to catch-up but still stay behind in order to make it work either that or be happy to just drop a creature

Aura of Silence (T1, Ext, S, Block) Aura of Silence started out being a sideboard card that people gradually graduated to the main deck