Wild Manabomb

Whenever a player casts a spell, if its converted
mana cost is less than the number of doom
counters on Wild Manabomb, Wild Manabomb
does X damage to X different targets, where X is
the total number of doom counters on cards
called Wild Manabomb, then exile all cards
called Wild Manabomb. Otherwise, put a doom
counter on Wild Manabomb and put a token
that's a copy of it onto the battlefield.
The spell went better than he'd hoped. Too much better