Aside from the novelty of his creature type, Captain Howler has a lot going for him
Retail prices would be higher, buylists will be lower
However, as the player bringing Hokori to the party, you're able to plan accordingly, filling your deck with alternative means of creating mana, namely in the form of artifacts
The upside of this is that you can pull off some crazy combos that are really satisfying
Ancient Greenwarden Atmospheric Greenhouse Bringer of the Green Dawn Circle of Protection: Green Dryad Greenseeker Emissary Green Fecund Greenshell Green Dragon Green Goblin Green Goblin, Back for More Green Goblin, Nemesis Green Goblin, Revenant Green Mana Battery Green Scarab Green Slime Green Sun's Twilight Green Sun's Zenith Green Ward Greenbelt Guardian Greenbelt Radical Greenbelt Rampager Greener Pastures Greenhilt Trainee Greenhouse // Rickety Gazebo Greenhouse // Rickety Gazebo Greenseeker Greenside Watcher Greensleeves, Maro-Sorcerer Greenwarden of Murasa Greenweaver Druid Greenwheel Liberator Greenwood Sentinel Gysahl Greens Legolas Greenleaf Llanowar Greenwidow Lurking Green Dragon Outcaster Greenblade Rune of Protection: Green Ultimate Green Goblin Wielding the Green Dragon
Gogo, Master of Mimicry is really cool, and will be a great add to your Wizard decks, and your Spellslinger decks