Rise of Immersturm

Create X 2/3 red demon berserker's with menace
where X is the number of creatures that attacked
this turn. If this card was cast during your
combat phase creatures you control gain first
strike until end of turn.
As the forest burned behind them the demons slaughtered every last man, women and child. After centuries of waiting, the horrors of Immersturm had
finally been released.