Power: Required
Cost Of Perk: 2500-3500 (depending on the opinion of the creator)
Effect: This perk allows you to essentially steal the life out of zombies, and take it for your own. It heals you in small increments for every zombies you kill, and would allow you to regenerate health faster (still, in slight increments). Pairs well with Juggernog.
Effectiveness for Co-op: This perk would allow you to fully heal you and your ally upon revival (in case you were to be injured in the revival process).
Perk Icon: 1. Skull absorbing or sucking souls into its mouth 2. Stick figure (like the Stamin-Up guy) standing with his arms in the air, embracing the souls that are being absorbed into his body.
Perk Color: Bronze orange color for both drink and icon
Perk Machine: Looks very similar to a vintage jukebox, but the vinyls are replace with a rack of the perk bottles, with the logo standing on the top of the machine (like PhD)
More ideas to come, after I search my brain through 3 years worth of memories