The Infected Broodmother Trinket is a tier 3 Trinket, obtained as a 1% chance to normally drop or a 1/21 chance from stealing from the Infected Broodmother.
When equipped, the player gains the Blastwave status effect. This gives player-summoned Creatures a 25% chance to cause a mini explosion when they attack, dealing 70 explosive damage. It will also provide double damage to all friendly summons.