Winning Sacrifice

This spell can't be countered.
Exile all creatures, artifacts, and enchantments.
Then create a 10/1 dragon creature token with
flying, double strike, haste, indestructible, and
hexproof, under your opponent's control. For
one turn, your opponent gains hexproof, but
cannot cast instants, sorceries, or
enchamntments. If your opponent cannot
reduce your life to zero, you win the game.

Sometimes one sacrifice wins the war.