Umbral Ice

Umbral Ice is a buff that significantly increases MP regeneration while lowering the damage and MP cost of Fire spells. At 3 stacks, the cast time of Fire spells is also halved.

MP regen is roughly as follows (per MP regen tick):

• 1 stack: 32% of total MP
• 2 stacks: 47% of total MP
• 3 stacks: 62% of total MP

MP cost decrease to Fire spells is as follows:

• 1 stack: 50% MP cost (0.5x)
• 2-3 stacks: 25% MP cost (0.25x)

Damage decrease to Fire spells is as follows:

• 1 stack: 10% decreased damage (0.9x)
• 2 stacks: 20% decreased damage (0.8x)
• 3 stacks: 30% decreased damage (0.7x)

Cast time reduction to Fire spells is as follows:

• 3 stacks: 50% cast time (0.5x). Does not affect recast time.

You're able to make it stack to 2x after level: 20 Enhanced_Aetherial_Damage And 3x after level: 40 Increased_Aetherial_Damage_II.