Chandra, Pyromancer Adept

: Whenever an opponent is dealt damage, put a loyalty counter on this plansewalker.
-1: Chandra deals 1 damage to target creatre or player, then you may sacrifice a mountain, if you do, repeat this process.
-5: Destroy all non-mountain lands. Chandra deals 1 damage to each player for each land put into their graveyard this way.