Power Word, Annihilate

Power Word, Annihilate
Magic Resistance: Yes
Ultimate Eldritch Spell [Magical, Perceptive]
Prerequisites: Eldritch Rank 9
Disciplines: Evocation
Potency: [2d8 + Eldritch Rank]
Cast Action [CT 1, REC 7]
Components: V
Cost: 1 Karma, 6 Stamina and 3 Stamina Burn
Effect: With the utterance of a single word, the energies holding your target together suddenly begin to unravel. Make an attack:
Range: 50 ft
Target: One creature or object within range.
Attack: Arcana P vs. Fortitude
Hit: The target suffers ongoing 90 Annihilation damage every 5 segments [SE, ST 7d10 vs CON]. An unattended object is destroyed.
Miss: 45 Annihilation damage
Augment, Annihilating Speech
[Eldritch Rank 10, Stacking]
Stacking [Eldritch Rank 10, 11, 12, etc]: This augment may be applied multiple times and is limited by your character’s Eldritch Rank.
Effect: Increase the ongoing damage by 10.
Structural Effect: Instead of targeting a creature, you can target a single section of a structure, +60 vs Durability.
Special: If the target succeeds its initial saving throw, it suffers 90 Annihilation damage.