Kasla, the Broken Halo is a mythic Legendary Creature — Angel Ally card from March of the Machine Commander (MOC), collector number 4. Current market price: $0.33 (foil $0.44), TCGplayer market prices via Scryfall.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Flying, vigilance, haste Whenever you cast another spell that has convoke, scry 2, then draw a card.