This deck takes advantage of Mwonvuli Beast Tracker in the form of Descendants' Path: tutor a nasty looking thing with Mwonvuli, slap it on the top of the deck, then when Descendant's Path triggers, you'll have your creature ready to go. Of course, you'll need a creature that shares a creature type, which is why I've got the changelings to accomplish that. In the event that I draw one of my fatties, Elvish Piper takes care of the job. Yeva, Nature's Herald allows me to flash in Mwonvuli to throw off an opponent when they think that they're safe.
It's pretty straightforward, so let me know what you think, as well as what can be done to make it better. Thanks!
So I gave the deck a nice playtest online. The metagame really dictates what to run in your sideboard or not. From the looks of the meta, it'd be better to mainboard the Negates as opposed to sideboarding them. Acidic Slimes are also extremely powerful, so those'll go in the mainboard as well. I'm swapping them out for the Farseeks and Urban Evolutions.
Also, I'll run Misty Rainforests online. I won't have them in my real life deck (yet) due to budget and all, but hopefully the deckthinning will help.