Under Humility, that is. I asked a buddy of mine in Arizona who's a Level 2 (3? sorry if I'm getting that wrong) judge and he told me that Humility doesn't effect creature type.
That means Gempalm Avenger: Your role is secure.
I got in a few rounds of multiplayer Magic with Matt and Caitlin a couple nights ago and while I found myself in charge of both matches, I wasn't exactly in control of them. Pushing a win condition wasn't easy and I had to sacrifice a bit too much in the early game in one case.
So it's possible that other cuts should be identified and made. Matt has already suggested that Aether Storm should be replaced and that's not a terrible notion. Of his suggestions for a replacement, Overburden seems like the potential toughest to deal with. Land drops are one of the ways Magic paces itself and messing with that seems really good.
Kusari-Gama also looks really interesting, too. However, I am dubious of the overall costs vs what Gempalm Avenger does for me. That just feels like a more efficient use of mana vs the equipment--except in multiplayer situations. However, even that seems excessive, since I can generate as many tokens as I like. Just run 'em at them, you know?
Still, I've got some options to explore and this deck is making a case for doing so.