Chance to temporarily make your attacker unable to cast spells. Every time a creature casts a spell on you, there is the chance 1% per level to silence the attacker for 30 seconds.

You need to have a Grimoire with you to use the magic retaliation perk.
Magic damage taken within the last 15 minutes will be counted.
Based on that counter, a “charge level” on your Grimoir will be shown.

The current total damage as well as the charge level will be shown in your Grimoirs tooltips.
Your progress is bound to your character, not to a specific Grimoir.

The Retaliation perk increases magic damage based on that charge level.
Damage Bonus: 12,5% * level * (charge level / 10)

This perk only works in combined with the Magic Retaliation perk.
With a double click on your Grimoire, you unleash the collected energy with Magical Retaliation towards your current target.

• Damage: 50 + perk level * 25 * retaliation charge level * 0.1
• Resets damage counter of Magic Retaliation (what also sets back your charge level to 1)
• Cooldown: 3 minutes

A Grimoire can only be used when equipped.

Reflect a portion of all the magic damage you take back to the aggressor for a limited amount of time.

• Damage: while 50% of the damage gets reduced on your side, only 40% of incoming damage will be reflected back to the aggressor.
• Duration: 30 seconds