Sarkhan the Masterless is a rare Legendary Planeswalker — Sarkhan card from War of the Spark (WAR), collector number 143. Current market price: $0.51 (foil $0.97), TCGplayer market prices via Scryfall.
Whenever a creature attacks you or a planeswalker you control, each Dragon you control deals 1 damage to that creature. +1: Until end of turn, each planeswalker you control becomes a 4/4 red Dragon creature and gains flying. −3: Create a 4/4 red Dragon creature token with flying.