Very good Plugin.
Helpfull when Users want more Mob Heads. :)

But maybe add an % Chance for Each Looting enchanting ?

COW:
drop: true
chance: 7
looting: 1

(This gives for each Looting Enchanting 1% more Chance)
chance: 7
looting: 1 (Looting2) = 2%

It gives me 9% for my Looting :)

good plugins but a suggestion maybe add a token shop thing where you can trade heads in for tokens using token manager, also is there a way to add support for 1.8-1.13?