Gender ID: Female (she/her)
Age 28, Caucasian, 5'6". A professor in Cambridge University's department of Anglo-Saxon, Norse, and Celtic Studies. Her particular area of focus is Arthurian legends.
She's lived in Britain most of her life, but is in fact half-American; the British side of the family (her mother's) looks down on the Osterlunds, who were working class Minnesotans, in perhaps the worst version of the "boorish Americans / snooty Brit" trope.
Shielding
Rune: Algiz / "Defense"
Stone: Blue-green, e.g. turquoise or agate
Teleport
Rune: Raidō / "Journey"
Stone: Dark blue, e.g. lapis lazuli or iolite
Features: An extremely knowledgeable assistant, a library of old tomes, magical wards, a focus circle
Downsides: It attracts otherworldly attention, it always lacks a key piece or ingredient
Phoenix: "go-to" [2 debts owed] — Helps when normies need to forget magic exists, both as hacker and hitter.
Iris: "dangerous secret" [Owed 1 debt] — Celica is one of the few (possibly the only) people who knows Iris didn't kill her oath-breaking boyfriend.