Is Corrosion worth taking in TFT Set 18?

Corrosion is a Silver augment rated tier B on patch 18.2. Treat the tier as a guide and check the effect against the comp you are playing.

When is Corrosion offered?

Corrosion is offered at stages 3-2, 4-2.

Corrosion TFT Set 18 Augment Tier and Effect (Updated September 2026)

Corrosion augment for Teamfight Tactics Set 18. Full effect, rarity, similar augments and the strongest comps of the set.

Last UpdatedSeptember 20, 2026

Corrosion

Patch 18.2 · Set 18 · Teamfight Tactics

Enemies in the first two rows lose 4 Armor and Magic Resist every 2 seconds.

Resist Loss: 4
Time: 2

Resist Loss4Time2

TierBRaritySilverTypeAugmentOffered at stages3-2, 4-2

Similar augments

All augments of Set 18

Part of TFT Set 18

Set 18 Overview

Top Set 18 comps

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Frequently asked questions

Is Corrosion worth taking in TFT Set 18?: Corrosion is a Silver augment rated tier B on patch 18.2. Treat the tier as a guide and check the effect against the comp you are playing.
What does Corrosion do?: Enemies in the first two rows lose 4 Armor and Magic Resist every 2 seconds.
When is Corrosion offered?: Corrosion is offered at stages 3-2, 4-2.

How the Corrosion page is built

Where the data comes from

The Corrosion page is built from game data for the current Teamfight Tactics set. The effect text, rarity and the stages where the augment is offered are refreshed with every patch. When a tier letter is shown, it tells how strong Corrosion is in the current meta.

What this page shows

The card at the top shows the full effect of Corrosion, its tier, rarity, type and the stages where you can pick it. Right below are similar augments of the same type, stronger ones first, so you can see what to take instead. Further down are the strongest comps, items and traits of the set.

Augment strength depends on your board, stage and economy, so treat the tier as a guide and check the effect against the comp you are playing.

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