Ring Reforged

Enchantments you control have Indestructible.
Whenever a Legendary Creature an opponent
controls dies, place a Shard Counter on Ring
Reforged.
At the beginning of your upkeep, if there are 12
or more Shard Counters on Ring Reforged, you
win the game.

"Cross the fog, to the Lands Between, To stand before
the Elden Ring, And become the Elden Lord."