"We survived the Travails! Killer angels! Horrors from beyond the moon! Now some big werewolves think they can scare us? Let 'em try."

Unruly Mob

Whenever another creature you control dies, put a +1/+1 counter on this creature.

Innistrad: Double Feature

Innistrad: Midnight Hunt

"Those who aren't welcome will know it!"
—Kolman, elder of Gatstaf

Shadows over Innistrad

Whenever another creature you control dies, put a +1/+1 counter on Unruly Mob.

"Who says werewolves are the only ones who can hunt as a pack?"
—Kolman, elder of Gatstaf

Innistrad

If Unruly Mob and another creature you control die simultaneously (perhaps because they were both attacking or blocking), Unruly Mob won't be on the battlefield as its triggered ability resolves. It can't be saved by the +1/+1 counter that would have been put on it.