Basri Ket is a mythic Legendary Planeswalker — Basri card from Core Set 2021 Promos (PM21), collector number 7p. Current market price: $2.29 (foil $2.25), TCGplayer market prices via Scryfall.
+1: Put a +1/+1 counter on up to one target creature. It gains indestructible until end of turn. −2: Whenever one or more nontoken creatures attack this turn, create that many 1/1 white Soldier creature tokens that are tapped and attacking. −6: You get an emblem with "At the beginning of combat on your turn, create a 1/1 white Soldier creature token, then put a +1/+1 counter on each creature you control."