Spell Card: Red Magic.

No I think this is the "Remilia Flash" from post #533244

lolin86 said:
No I think this is the "Remilia Flash" from post #533244

Because you can see her from below???

紅符「スカーレットシュート」
Scarlet Sign "Scarlet Shoot"

I think this is correct, because the large, hollow bullets are red instead of purple, and look to have been fired simultaneously rather than in a quick semicircle (as in Scarlet Sign "Scarlet Meister").