Weapon Bond

If your bonded weapon is not in your hand, this summons it to your hand if it is in the same plane of existence. If it is already summoned and you use the attack action, you can infuse your bonded weapon with magical power of your choice. You do 1d4 damage extra of this type on your weapon attacks with this weapon on this turn.

At higher levels the damage increases with one die level when you reach level 10 (1d6) and level 16 (1d8)