Playing Etali as your commander gives you even more chances to trigger his ability and go crazy
We could try it in a white aggro deck, splashing black: Creatures (26) 2 Anafenza, Kin-Tree Spirit 1 Dragon Hunter 3 Kytheon, Hero of Akros 4 Consul's Lieutenant 4 Lantern Scout 4 Expedition Envoy 4 Thalia's Lieutenant 4 Town Gossipmonger Lands (22) Spells (12) While the interaction between Incited Rabble and Behind the Scenes is cute (anything back-heavy doesnt die to one-on-one combat, typically) and Behind the Scenes would do good work for breaking standoffs, this list looks like it would be substantially improved by cutting the four black cards for some Archangel Avacyns, Archangel of Tithes, and/or Gideon, Allies of Zendikar
In addition to incubation, Brimaz also lets you Proliferate at the beginning of each end step if a Phyrexian died under your control that turn
Land Color tag templates(None) Murmuring Bosk ( : Add .) As this land enters, you may reveal a Treefolk card from your hand
Finally, Nadir Kraken provides a wonderful low-opportunity win condition
Ideally, this should make drawing a creature with a Power Up ability feel more cost-effective late game