Recommended Support Gems for Sigil of Power:

Cooldown Recovery - Reduces downtime between casts
Prolonged Duration - Increases the time the sigil remains active
Magnified Area - Expands the radius of Path of Exile 2 Currency the zone, beneficial for party play

Using these support gems ensures multiple party members can benefit from the buff without needing constant repositioning. In group setups, maximizing area and duration can significantly amplify overall DPS.

How Sigil of Power Works

When cast, Sigil of Power creates a circular zone on the ground. Standing within it grants:

Up to 14% increased spell damage by default

The spell also features a unique scaling mechanic based on mana expenditure:

Spending 50% of your maximum mana while the sigil is active increases its effect
This bonus can stack up to four times
At maximum stacks, players gain up to 56% increased spell damage

This scaling makes Sigil of Power one of the most powerful tools for buy POE 2 Currency sustained DPS in Path of Exile 2, particularly for mana-heavy caster builds.