MAGE IS BEST is a Legends of Idleon alchemy bubble: upgrade material. All Purple Passive Bonuses, which are the smaller sized ones, give 1.04x more bonuses to your mage-based characters.

MAGE IS BEST | Idleon Toolbox

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Water Drops

MAGE_IS_BEST

It's often misunderstood that this is part of the spore's head. But it's actually just a stylish hat. ... well, stylish in Mushroom Culture at least.

Wiki

MAGE IS BEST

Material