Graveyard Soil

Graveyard Soil
Graveyard soil is made from a dirt block (Note : Does NOT work with grass block), a rotten flesh and a bonemeal. It heals undead mobs, for example zombies. It only heals the mob standing on it if : (As seen on the picture) it heals 1 heart at a time, if hit while standing on the block. It is rare for the mob to be healed constantly while on the block. It never heals the undead instantly or fully, so don't worry. (Just be happy :D)
 * It is undead ,
 * unlikely to heal during day ,
 * if it is standing on it constantly ,
 *  and/or it is hurt more than 1 heart .