Black mage - Maintaining the rotation of spend, recharge, and in betweens.

Astral Fire, Umbral Ice unchanged.

ALL-Cast: Toggle. While this is toggled, all spells deals less damage but hit all enemies within 5y.
Fire: Unchanged. Enters Astral Fire if not in AF/UI.
Blizzard: Unchanged. enters UI if not in AF/UI
Scathe: Neutral spell. No MP cost.
Transpose: Activating transpose deals damage in a 5y radius around you while switching your attunement, restoring MP based on Instability and resetting it to 0.

Thunder: Unchanged.

Astral Fire: Trait. Spellpower increases as Instability rises.
Umbral Ice: Trait. Spellspeed increases as instability rises

Mechanic: Instability. Each spell cast increases the instability bar, rapidly increasing MP costs and Critical Hit chance.. Casting a spell at 100% instability incurs an additional affect based on the spell. Neutral and opposite-stance spells reduce Instability and restore some MP.

Max Instability
Fire: Inflict the target with a DoT effect.
Blizzard: Inflicts the target with vulnerability
Thunder: As Thundercloud, detonating the previous Thunder DoT before re-applying.
Scathe: Increased MP return.