Chandra, Gremlin Wrangler is a mythic Legendary Planeswalker — Chandra card from 2016 Heroes of the Realm (PHTR), collector number 1.
+1: Create a 2/2 red Gremlin creature token. −2: Chandra, Gremlin Wrangler deals X damage to target creature or player, where X is the number of Gremlins you control.