Board Thread:New on Terraria Wiki/@comment-24800886-20140426011417/@comment-24546817-20140427130404

He should also drop Heart of Fire which is used to make Magma armor with:

Magma Helm-1 Heart of Fire, 5 obsidian and 10 hallowed bars-18 deffence Magma Breastplate-1 Heart of Fire,10 obsidian and 25 Hallowed bars-22 deffence, 17% increased melee dmg Magma Greaves-1 Heart of Fire, 8 obsidian 20 hallowed bars-20 deffence, 5% increased movement speed on FIRE BLOCKS ONLY

Set bonus: Imunity to burning and on fire, when damaged attacks get On Fire! debuff