uncommon cleric evocation 

Domain zeal

Cast [>] somatic

Range touch; Targets 1 weapon you're wielding

Holding your weapon aloft, you fill it with divine energy. On your next Strike with that weapon before the start of your next turn, you gain a +1 status bonus to the attack roll and the weapon deals an additional die of damage. If the weapon has a striking rune, this instead increases the number of dice from the striking rune by 1 (to a maximum of 3 extra weapon dice)

If the target weapon leaves your possession, weapon surge immediately ends.

Core Rulebook, page 399.