Salayifir, Time Immemorial

Hexproof, Trample, Flying, Intimidate, Indestructible, Annihalator 10, Protection from all Colors.
Salayifir, Time Immemorial can't be countered
Salayifir, Time Immemorial's power and toughness is equal to your life total
When Salayifir, Time Immemorial enters play, you gain 500 life
The Multiverse shivers at her presence, cracks at her steps, and shatters at her breath