Miara, Thorn of the Glade is a uncommon Legendary Creature — Elf Scout card from Commander Legends (CMR), collector number 133. Current market price: $0.27 (foil $0.28), TCGplayer market prices via Scryfall.
Whenever Miara or another Elf you control dies, you may pay {1} and 1 life. If you do, draw a card. Partner (You can have two commanders if both have partner.)