Crystal Abundance — Ruling

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To activate Crystal Abundance, send 4 face-up "Crystal Beast" cards from your Spell & Trap Zone to the Graveyard as a cost.
You can still activate Crystal Abundance even if there are no "Crystal Beast" monsters in your Graveyard. (If you send any of your opponent's cards to the Graveyard when resolving Crystal Abundance, you will choose monsters to Special Summon from among the "Crystal Beast" monsters sent to the Graveyard to activate Crystal Abundance.)
Crystal Abundance does not target.
Sending as many cards on the field to the Graveyard as possible, and Special Summoning "Crystal Beast" monsters from the Graveyard, are not treated as happening simultaneously.