Volatile Fang
Tier 3 Explosive Perfect Block
Volatile Fang is a Tier 3 trinket in Grounded. Its effect is Explosive Perfect Block. In-game it is described as: "The fang of an infected wolf spider that's ready to explode on command."
A trinket occupies a utility slot — it grants a passive effect rather than raw armor or damage, so it competes with your damage and survival perks for that slot.
The effect it grants is Explosive Perfect Block, which is what you are really equipping it for; the slot is better spent here than on a trinket whose effect you will not trigger.
You get it via Infected Wolf Spider.
Verdict: Overall Volatile Fang is a Tier 3 trinket best used when its Explosive Perfect Block effect fits the fight ahead.
How to get: Infected Wolf Spider
The fang of an infected wolf spider that's ready to explode on command.