Okay, so, Cow Bells are now going to have some value to the, and they are going to help those who are actively participating in the WLs actually get something that allows them to catch up to the older veteran when it comes to Abilities.

Cow Bell Crystallization has been revamped as a recipe.
This affects all 3 tiers.

All tiers will require 2 Null Crystal Shards as the base, and all tiers will allow 1 optional Crystal Shard of any type, or an Abstruse Crystal.

The optional shards will give XP based on their rarity; Fires giving the more than Oranges, etc.
Abstruse Crystals are however king here, and will give the most out of all of them.
Do note that Nulls cannot be used as an optional Shard.

Obviously, the higher tiered recipes will get you more XP per craft, so keep that in mind.

Also, Abstruse Crystals now drop from Crystal Entities.
They're rare though; rarer than Fires. So good luck with that.

Note: Right now, there is a visual bug when it comes to crafting being used on targeted items; the XP rewarded after a craft shows the base XP reward, regardless if you are overleveled, or if you used any optional items.

This is a visual bug; you are actually rewarded based on the calculation you see while choosing the items; the text in red.
I'll fix this when I get back.