Maurading Raptor is the perfect 'enrage' enabler, but doing 2 damage to each creature you play also sounds like a perfect breeding ground for some devious combos. After a little testing, I think I've found a synergistic, fun to play enrage deck - Persistent Enragers.
Combos
Marauding Raptor + enragers - the obvious combo. Zap Raging Raptor or Ripjaw Raptor when they etb to ramp your lands or draw cards.
Marauding Raptor + Vindictive Vampire + Sprouting Phytohydra
Sprouting Phytohydra goes infinite when Marauding Raptor is in play. So if you also have Vindictive Vampire in play, you instantly win the game.
Rhythm of the Wild/Grumgully + persisters
Something I stumbled upon in another deck is that any creature with persist never truly dies if you have Rhythm of the Wild or Grumgully on the board. This little combo here can keep your opponent at bay until you've set up your combo pieces. It can also win the game all by itself, constantly getting life from Kitchen Finks or removing creatures/dealing direct damage with Murderous Redcap. Better yet they combo with Vindictive Vampire + Marauding Raptor.
Marauding Raptor + Vindictive Vampire +
Rhythm of the Wild + persisters
So if you have Vindictive Vampire out along with Marauding Raptor, playing any 'persister' is an insta-win just like Sprouting Phytohydra as they are only 2 toughness and will die/persist indefinitely.
Helpful cards:
Domri, Anarch of Bolas
Since this deck is creature dependant, Domri protects from counter spells (along with Rhythm of the Wild), and helps ramp a little. More importantly, his 'removal' ability synergies with the enrager creatures well. His removal ability also lets you set off a combo (a persisters or Phytohydra) if you have them and the other combo pieces on board.
Problem cards:
It would make sense to have more Vindictive Vampire-type cards that deal damage when a creature dies. Unfortunately the tried and true Blood Artist and Zulaport Cutthroat are too weak to play. Even if you have a Rhythm of the Wild out, they'll die to Marauding Raptor. Another option is Falkenrath Noble, but you'd have to have Rhythm of the Wild out to play him.
Final note:
As with all my decks, these are made from cards I actually have. So the mana base may not be perfect, and the decks will not always have chase cards.
