Shyvana the Obsidian Flame

Double strike
Whenever this creature enters the battlefield, put
a blaze counter on a target land without a blaze
counter on it. At the beginning of your
opponent's upkeep, they take 1 damage for each
blaze counter they control. Whenever they take
damage from a blaze counter, put another blaze
counter on a target land they don't control.
Whenever an opponent is dealt 10 or more
damage total by blaze counters, transform
Shyvana.