Howling Beowulf

Whenever Howling Beowulf attacks, each other attacking Horror you control gets +1/+1 until end
of turn.
"They can vary greatly in size, with the average
specimen being about the size of a human, but with
larger Beowolves appearing more than twice as large.
Their strength in numbers make them a formidable
foe."
-Survivor's compendium, entry 2