The Effect Master is used to give endless potion effects to the user.
The Effect Master is created, by copying the image shown below in the TMC Crafter.
Drop any of these bottled potions on the Effect Master to get an endless effect.
Night Vision
Invisibility
Jump Boost
Fire Resistance
Swiftness
Water Breathing
Regeneration
Strength
Stand on the Effect Master to get the potion effect for two minutes.