El Goonish ShIVe: Damn It, Dan, Stop Teasing Us!

[Yuki Akuma]

Pandora saying that Tedd will be able to cast the spells he copies and Arthur casting a sleep spell without a wand suggest otherwise.

Arthur was wearing a conspicious ring that he has never been seen to wear before or since when casting that sleep spell.

The ring is a wand. It's small because it's for Arthur to use, who has a boatload of magic energy he can use to power it.