Unwanted Brawl

Unwanted Brawl enters the battlefield with X
madness counters on it.
At the beginning of your upkeep, remove a
madness counter from Unwanted Brawl. If
Unwanted Brawl has no madness counters on
it, sacrifice it and destroy all creatures.
All creatures get +2/+0, have first strike, and
must attack each combat if able.