Kyler, Sigardian Emissary is a mythic Legendary Creature — Human Cleric card from Midnight Hunt Commander (MIC), collector number 4. Current market price: $0.61 (foil $0.48), TCGplayer market prices via Scryfall.
Whenever another Human you control enters, put a +1/+1 counter on Kyler. Other Humans you control get +1/+1 for each counter on Kyler.