Martial Strike

Evocation Cantrip
Casting Time: 1 action
Range: Self
Components: V, S
Duration: 1 round
Element: Magna

You infuse your weapon with magical energy, enhancing your next attack. Make a melee weapon attack as part of casting this spell. On a hit, the target takes normal weapon damage, but you add your Strength or Dexterity modifier (whichever is applicable) to the damage roll twice instead of once.
This spell can't be used while another cantrip from warrior's spell list is active.