Krysta (ability)

Krysta is a recurring ability in the series.

Crisis Core -Final Fantasy VII-
Krysta is an enemy ability used by Minerva, which inflicts massive non-elemental magic damage to Zack. It requires extremely precise timing to dodge through to avoid taking any damage at all.

Final Fantasy X
Krysta is an ability used via Rikku's Mix command, which inflicts three hits of major Ice-elemental damage to all enemies, as well as Poison, Darkness, Silence, Sleep, and Full Break for three rounds.

Final Fantasy X-2
Krysta is an ability used via the Mix command, which inflicts three hits of 300 Ice-elemental damage and Sleep to random enemies.