Magma Stone

Rare drop from Lava Bat and Red Devil mobs found in The Underworld after one hard mode boss has been killed. Causes your melee attacks to inflict the On Fire! debuff on enemies, and also gives a red flame particle effect whenever you swing a weapon. Each melee attack has a 14% chance to cause 3 seconds of burning, 29% chance to cause 2 seconds and 57% chance to cause 1 second.