Ultimate Crystal Magic

Normal Trap

When your "Crystal Beast" monster is destroyed by battle: You can send 7 "Crystal Beast" cards with different names from your hand, Deck and/or face-up field to the GY; Special Summon 1 "Ultimate Crystal" Fusion Monster from your Extra Deck. (This is treated as a Fusion Summon.) If a face-up "Ultimate Crystal" monster you control leaves the field because of an opponent's card effect: You can banish this card from your GY; place any number of "Crystal Beast" monsters from your GY, face-up in your Spell & Trap Zone as Continuous Spells.

Rulings – Yugipedia

Printings:

Legendary Duelists: Ancient Millennium: LED2-EN040 (Super Rare) - 2018-02-22
Legendary Duelists: Season 1: LDS1-EN117 (Ultra Rare) - 2020-07-02
Structure Deck: Legend of the Crystal Beasts: SDCB-EN037 (Common) - 2022-09-29

Prices:

Cardmarket: 0.11 €
TCGplayer: $ 0.05