Fluffals have some great field control, combo potential and are actually realy fun to play.
First of all, this Deck can only uses his full combo potentioal when you go second.
Your main goal/stradegy with this deck is to wipe your opponents field with cards like Frightfur Tiger/Kraken, than summon Sabre-Tooth out of it, to finally hit your opponent with an full OTK combo.
Like for example, a good combo would be, to summon Kraken, destroy a monster, summon Sabre-Tooth out of it, special summon Kraken again, destroy another Monser if you will/need, use that one Sabre-Tooth to fusion another Sabre-Tooth out of it and than, for the finishing blow (when needed), summon a Frightfur Wolf with Frightfur Fusion with all the monster in your GY to let him attack multiple times, so that you opponet don't have a chance to survive this.
Nibiru is in there to hinder your opponent to make an "to good" board in his Main Phase, while Super Poly deals with those nasty untargetalbe/indestructable cards, which Fluffals have sort of an problem with. Called by the grave is in there to prevent Hand-Traps and helps your combos/searches to get through.