Weapon counterpart for infuser

[gimmekeyplskthnx]

I like the concept of infuser, and I also realized that weapon is the only item type that has no actives in it's 500 souls branch. Couldn't come up with a design for it's image, so feel free to float some ideas in the thread, please.

Rattler (500 souls)
+15 bonus health
+5 spirit
+5% firerate
Active: 36s cd
Gain fire rate and temporary ammo
+10% firerate
+20% temporary ammo
6s duration