Pictomatter
ピクトマター [pictomatter] in Japanese. The G in the item names refers to 'grade' if the name behaves the same way as, for example, Dark Matter.
Pictlogica

Pictomatter G1
Obtain: event quest The Sleeping Wings of Stone Vigil
Use: required for EX Alchemy to grade up Macuahuitl
Type: Alchemy Material, Rarity: ★★★★
Description: Material for EX Fusion and EX Alchemy synthesization

Pictomatter G2
Obtain: event quest The Ultimate Illusion, Ultima Weapon
Use: required for EX Alchemy to grade up Steel Falchion
Type: Alchemy Material, Rarity: ★★★★★
Description: Material for EX Fusion and EX Alchemy synthesization
Category: Item