Goblin Pyrocaster

When Goblin Pyrocaster enters the battlefield, it deals X damage to all other creatures. For each creature that dies this way, add one Mana of any color to your Mana pool.
{x}{r/w}{r/w}{t}: Deal X damage to target player or planeswalker.
"I want to be mad that she's burning everything in sight, but... I mean, just look how happy she is! It's kinda cute."