Lyse Hext is a rare Legendary Creature — Human Rebel Monk card from Final Fantasy Commander (FIC), collector number 178. Current market price: $1.12 (foil $9.59), TCGplayer market prices via Scryfall.
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Noncreature spells you cast cost {1} less to cast. As long as you've cast two or more noncreature spells this turn, Lyse Hext has double strike.