Fiery Runes

Evocation [fire]
Level: Alchemist* 2, Artificer * 2, Bloodrager * 2, Druid * 2, Hunter * 2, Magus * 2, Sorcerer */Wizard * 2
Components: V, S
Casting Time: 1 Standard Action
Range: touch
Target: melee weapon touched
Duration: 1 minute/level or until discharged (see text)
Saving Throw: None
Spell Resistance: yes, see text
  You Charge a weapon with a magic rune of fire. When the wielder of the weapon successfully strikes a foe in melee with the weapon, the wielder can discharge the rune as a Swift Action to deal 1d4+1 points of fire damage to the target. This damage isn't multiplied on a critical hit. If the target has spell resistance, you attempt a Caster Level check (1d20 + Caster Level) against that spell resistance when the rune is discharged. If the rune is successfully resisted, the spell is dispelled; otherwise, the rune deals damage normally. For every 2 Caster Levels beyond 3rd the caster possesses, the rune deals an additional 1d4+1 points of fire damage (2d4+2 at Caster Level 5th, 3d4+3 at 7th, and so on) to a maximum of 5d4+5 points of fire damage at Caster Level 11th.