Talk:Eater of Worlds/@comment-5202803-20120616193101/@comment-65.102.94.32-20120621063503

That is almost enough, but you need one additional Vile Mushroom, and then have to take the Vile Mushrooms to a crafting station and turn them into Vile Powder. You need 30 Vile Powder (5 powder per mushroom, so 30/5=6 mushrooms) and 15 Rotten Chunks (guarenteed drop from monsters from the Eater of Souls family).

Not a difficult summoning item to make (or you can break three shadow orbs if you haven't already to summon him naturally!).

The summoning item is called Worm Food. http://terraria.wikia.com/wiki/Worm_Food

Happy hunting!