Fighter/11th/Magic Knight

Spellstrike

At 11th level, you learn to focus your spell attacks the same way you can target your weapon attacks. Just before making a spell attack roll with a rod or a spellsword spell, you can make it a spellstrike by expending 2 stamina points.

If a spellstrike hits, the damage roll is maximized (e.g., treat 1d10 simply as 10), including any extra dice rolled as part of a critical hit or from other sources. Your DM may enable alternate or additional effects for a spellstrike, as with target strikes.