you can just kill the 8/8 then leave your opponents with an annoying choice next turn: Do they take 10 damage or block and trigger a bunch of fights
I also made a deck (less expensive haha) of Chatterfang, and I would suggest you to add Spawning Pit which is really strong with drain card like Bastion of Remembrance, Zulaport Cutthroat and Blood Artist (which are the main wincon in my deck)
Number 6 Language English Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Modern, Pauper, Pioneer, Standard, Timeless Banned Formats Commander, Legacy, Vintage Rulings (8/23/2016) Conspiracies are never put into your deck
Whether it blocks or becomes blocked, or if you inflict damage to it with one of your cards or creatures abilities, you'll create a token of Polyraptor