How to get and use PoE Sinistral Catalyst?

Sinistral Catalyst

• Adds quality that enhances Prefix modifiers on a ring, amulet or belt
• Replaces other quality types

How to use it?

Right click this item then left click a ring, amulet or belt to apply it. Has greater effect on lower item level, non-unique jewellery. The maximum quality is 20%.

How to get it?

• Obtained as an Ultimatum reward from Ultimatums found in a Mirage.

More importantly, the mechanic may be empowered, with new threats and rewards that are customised to each mechanic and only available when doing that mechanic in the Mirage. For example, Ultimatums recreated in Mirages will have new threatening modifiers added to the usual pool.

Restless ground can raise slain enemies to fight again… Or quicksand will grasp at your ankles… As a reward for these new threats, Mirage Ultimatums can provide the new Sinistral or Dextral catalysts. These catalyse jewellery with increased effect of either Prefix or Suffix modifiers.

Related

• Dextral Catalyst: Adds quality that enhances Suffix modifiers on a ring, amulet or belt