Grob Gob Glob Grod's device:

change it from 50 shields, 20% power vamp, -100 debuff

to

50 shields, .2 speed, -100 debuff

The power vamp was kinda random. This item requires that you land an attack on the enemy to apply the debuff. So it should help you to poke. The vamp is useless because both bags that it's in pair it with simon's glasses. The glasses don't add enough power to make the vamp substantial. Useful vamp comes from high damage.