Is there anything else you think would help my chances?"
"I can be simultaneously weightless and very strong, but can't make the things I'm wearing immune to gravity. So I can't fly, but may be able to compensate for it for some purposes. Why?"
"My people sometimes carry things in bags on their backs with straps over the shoulders. You couldn't, with your wings, but if you wear something like that backwards then I could hang from that."
He tells the other two fairies, "Go back through the gate, return to whatever you'd be doing normally, and do everything in your power to make sure nobody finds out where you've been or anything about me."
Then he opens the door the required way, disappears through it, and will return shortly.
"You can make objects unnoticeable too, right?"
"Good. Then, do that on me and the harness and then I'm ready to start. How will I recognize Blossom when I see her?"
Would doing the sorcery be easier on the other side of the gate, or are you familiar enough with this place?"
"Just do it here, then; I'm not in much of a hurry." He reconsiders whether he wants a potentially hostile sorcerer to get familiar enough with anything on this side of the gate. "On second thought, yes, let's go do it in the garden." She did suggest it while under an order to keep him secret, after all.
Alendi has empty metalminds of any type likely to be useful. He can stay light for ages. He is, however, wishing he had thought to ask how long "ages" was likely to be.
When she does land, she does so in a secluded area, takes off the backpack with Alendi attached to it, advises him to step as lightly as possible, reminds him not to speak, and then successfully distracts various sorcerers between this area and a door to a library. She ushers him under a chair and reminds him that Blossom may take some time to arrive alone and is more likely to come with Thorn on any given visit.
And then Verve leaves.
It's still boring.
He waits until Blossom is nearby, then burns atium and charges out from under the chair.
He aims to ram an open vial down where her throat is going to be. She can choke on the glass for all he cares, but he's making sure some of its contents are getting down.