Essence Conclave

If you control an Essence enchantment of every
color, your opponents can't win the game and
you can't lose the game.
At the beginning of your upkeep, put a spark
counter on Essence Conclave, then sacrifice a
non-essence permanent for each spark counter
on it. If you can't, remove all essence
permanents you control from the game.
This gathering of unfathomable power came with an unfathomable consequence... - Scribe of Arctura