Umidzilik, Maw of Despair

When you cast Umidzilik, Maw of Despair, exile
two target permanents.
Indestructible, Despair 5-- (At the beginning of
each opponent's upkeep they must exile the top 5
cards of their deck and lose 5 life).
Whenever an opponent loses life, you may destroy
X target permanents, where X is the amount of
life they lost.
Galaxies fall at its hunger