Shalai and Hallar is a mythic Legendary Creature — Angel Elf card from March of the Machine Commander (MOC), collector number 10. Current market price: $6.12 (foil $6.35), TCGplayer market prices via Scryfall.
Flying, vigilance Whenever one or more +1/+1 counters are put on a creature you control, Shalai and Hallar deals that much damage to target opponent.