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Riot Data Dragon 16.20.1. Base values before items, runes and bonuses; independent of match-data filters.
Base-game reference only. Mode-specific balance changes and augments are not included.
Official short descriptions · Data Dragon 16.20.1
Base-game reference only. Item, rune and mode-specific adjustments are not included.
This reference covers the passive and four ability slots. Alternate forms and full damage calculations are not covered.
Passive
If Teemo stands still and takes no actions for a short duration, he becomes Invisible indefinitely. If he's in brush, Teemo can enter and maintain his Invisibility while moving. After leaving Invisibility, Teemo gains the Element of Surprise, increasing his Attack Speed for a few seconds.
Q
Obscures an enemy's vision with a powerful venom, dealing damage to the target unit and blinding it for the duration.
Base values from ability rank 1 upward.
W
Teemo scampers around, passively increasing his Move Speed until he is struck by an enemy champion or turret. Teemo can sprint to gain bonus Move Speed that isn't stopped by being struck for a short time.
Base values from ability rank 1 upward.
E
Each of Teemo's attacks will poison the target %i:OnHit% On-Hit, dealing damage on impact and each second after for 4 seconds.
Base values from ability rank 1 upward.
R
Teemo throws an explosive poisonous trap using one of the mushrooms stored in his pack. If an enemy steps on the trap, it will release a poisonous cloud, slowing enemies and damaging them over time. If Teemo throws a mushroom onto another mushroom it will bounce, gaining additional range.
Base values from ability rank 1 upward.