Ethan hands Benny the potion
Benny's Grandma kept this potion on a secret shelf. It has the power to bring the dead back to life, but cannot bring back their souls once they've moved on. Any more than a few drops will cause major disasters.
In Lawn of the Dead, Benny stole the potion to revive a dead dog in order to win its owner's heart, but created a disaster when the potion was spread to many animals' dead bodies, they were reanimated and began to attack the town.
Anti-Revival potion
An Anti-Revival potion reverses the effects of the revival potion and incinerates the reanimated bodies. Ethan, Benny and Sarah are charged with the task of turning the demon animals back with this potion.
Gallery
Effect of potion on a undead snake
Grandma brewing the antidote