Shaggy

Shaggy is an NPC located at the Spiders Den, inside the house on the hill.

He will give you the next part of the Relics quest if you have 1) spoken to the Archaeologist 2) battled Arachne and 3) are holding an Arachne Fragment. This quest says that you need to find 7 "rare relics," out of the 28 Relics found on the Archaeologist quest. They are marked with purple particles, similar to the Glowing Blocks found in The End. To activate the quest, you simply need to speak to Shaggy while holding an Arachne Fragment and have battled Arachne.

First time ever talking to him (not holding an Arachne Fragment)

 * "I used to think this world was peaceful, but there are some beings in this world that are stronger than I could ever hope to handle..."

While holding an Arachne Fragment

 * "Wow, you actually challenged that old witch Arachne, you have some potential kid..." "Have you heard about the rare relics on this island?" "Legend says they are infused with an evil deities strength, the truth is it is her power." "If you help me find those Relics I will tell you everything I know about the creature."

After the above, and before finding all the "rare relics"

 * "I hope we find those Relics one day..."

After finding all of the Relics

 * "Wow, this is great, I can see the day coming where we can rid the world of that darkness." 'I can see the day where we can wear down her power and destroy this evil." "If you can gather 3 Arachne's fragments, 8 enchanted spider eye's, and 30 enchanted string, I can gather the rest of what I will need!" "We will summon more of her power and deal a strong blow to her once and for all!"

After finding all Relics, and before bringing materials

 * "Those Relics are truly remarkable."
 * "You know the drill youngster, Bring me the 3 Arachne's fragments, 8 enchanted spider eyes, and 30 enchanted string, and I will make that crystal for you."

After above, and having at least 3 Arachne fragments, 8 enchanted spider eyes, and 30 enchanted string in your inventory
He will now give you an Arachne Crystal (you can do this as many times as you want; just bring him the necessary materials)
 * "Great, this is everything I need! With this I can make the crystal." "* Hammer and drilling sounds *" "* Glass breaking *" "Here ya go, if you put this on the alter, it will drag that retched creature to this world." "But be warned, she is strong, and I have it set up to drag her back if she is not defeated in 10 minutes, for the safety of this whole world." "I wish you good luck!"