Ghidora, Eternal Storm

This spell can't be countered.
When Ghidorah, Eternal Storm enters the battlefield, exile it with a charge counter on it
and destroy target permanent. Ghidorah gains
one charge counter on each of its owner's upkeep
phases. Return Ghidorah to the battlefield when
it has three charge counters.
Flying, flash, indestructible, triple strike
At the beginning of your end step, if you
descended this turn, you gain 3 life and target
opponent loses 1 life.