Kasla, the Broken Halo is a mythic Legendary Creature — Angel Ally card from March of the Machine Commander (MOC), collector number 137.
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.