[IC] The Red Hand of Doom in Eberron

[hoverfrog]

Mina retreats behind Lavender, ready to bolt if the hydra moves towards her. Once she feels safe she draws a glass rod from her bag and hastily tries to infuse magic into it that will stop the monster in its tracks. "Come on, come on, work," she mutters as her wet hands slip on the makeshift wand.

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Infusion: Spell Storing Item and burn an action point to reduce the casting time to a round.
Use Magic Device check (DC = 20 + (spell level x 3)) DC26 (1d20+11)[26] + (1d6)[6] for another action point to hopefully ensure that if I fail I don't have a mishap that strips me of my remaining hit point. EDIT; Oh well, I'm still glad I used it, just in case.

Phantasmal Assailants should drop the hydra's Dexterity and Wisdom by 4 each (with a bit of luck)

This will occur next round, I believe. Is it my next action to release the spell or does it happen as part of this action? (I suspect the former is more likely)