Barbed Servitor

If your life total is brought to 0 or less at the same time that Barbed Servitor is dealt damage, you lose the game before its last ability goes on the stack.

When an effect suspects a creature, it becomes suspected. It gains menace and "This creature can't block" for as long as it's suspected. It stays suspected until it leaves the battlefield or another effect causes it to no longer be suspected.

Being suspected isn't a copiable value. If a permanent becomes a copy of a suspected creature, it won't be suspected.