8 spellcards? Is that a duel? Or a bargain? And where does that worm come from? And what's happening to Cirno now?

Don’t miss the answer in the next episode of Elemental 8!

The deal. Patchouli asked for danmaku fight with Marisa.
Marisa prepared 4 spellcards, Patchouli took out 8 spellcards

FRien said:
8 spellcards? Is that a duel? Or a bargain? And where does that worm come from? And what's happening to Cirno now?

You have to declare how many spellcard you are using during a duel, and can do non-spell cards between them, but those must be always different from each other (non-spell 1 must be different from non-spell 2 that must be different from 3 that must be different from 1 and 4 that must be different from 1, 2, 5, etc...)

Patchy, you can't summon all your cards in the same turn! It's against the Rules!