I'm not sure I think this translates well over to the card game either
It was first introduced in 2010's Scars of Mirrodin MTG set, and its card list expanded further in releases like War of the Spark, Modern Horizons, and Phyrexia: All Will Be One
His ability isn't exactly unheard of as far as attacking creatures go but as far as I know the blocking portion he brings to the table is pretty unique
Tarkir: Dragonstorm has been fully released and we've got tons of great cards to consider for all kinds of formats like Commander, Five Color, Type Four, Highlander, Peasant and Pauper and loads more
You can have as many copies of Rat Colony as you want in a deck, and they're boosted by each other Rat you control, not just other Rat Colony copies
Youll also be doing a lot of attacking, so buffing your creatures can be really helpful in a werewolf deck