Grievous, Ruthless General

Defender
When Grievous, Ruthless General enters the battlefield, create 4 3/4 red Commando Droid creature tokens
{b/r}{b/r}{b/r}{b/r}{b/r}, {t}, Sacrifice two droid creatures: Put a +1/+1 counter on all droids you control. They gain Menace and Vigilance until end of turn