Potions are a battle item released in May 2017, found in Lamplight Town, in the Town Square. Purchase these from Scientist Slimerella, who is the slime wearing a lab coat and hugging a beaker of fizzy fluid. Every potion is only for members.
List of Potions
Gives resistance to all spells except for of the Shadow element for one turn.
Strong Damage Bonus
Strong Plant Resist
Strong Fire Resist
Strong Ice Resist
Strong Resist All
Gives resistance to all spells except for of the Shadow element for one battle.
Strong Storm Resist
Strong Water Resist
You can receive a free Strong Resist All from Scientist Slimerella, called "Sample: Strong Resist All", even if you are not a member.
Obtainment Methods of Potions
Purchase as a member through Scientist Slimerella.
Find occasionally in island chests.
Obtain from spinning wheels.
Open conjure cubes, member boxes, or parent reward boxes.