Errant, War Torn

If you paid {b} when casting this spell,
Errant, War Torn enters the battlefield tapped.
{1}{b}{u}, Put a +1+1 counter on Errant.
{t}, Tap target creature an opponent controls.
Activate this ability only if that creature's
power is equal to or less than Errant,
War Torn's power.
"I am a protector, not a soldier."