Planeswalker's Final Fury

You may Sacrifice a planeswalker.
Choose one:
-Target creature has burn 2.(A creature with burn continuously loses X life on each of its opponent's upkeep.It can't regenerate for the rest of the game.)
-Exile target permanent.
Then, deal 5 damage to each opponent.
If you sacrificed a planeswalker, deal 10 damage instead.