River Road, Rosemont, IL 60018
The dream play would be doing that on Worldspine Wurm
Ive personally tested it in Boros Energy, splashing black for Sephiroth and some Thoughtseizes, mainly because of how combo-heavy the current meta is
For instance, in an Archimandrite deck you could gain a bunch of life in your upkeep and first main phase to add a big +X/+0 buff to your commander, then use Alteration to turn it into Giggling Skitterspike
Alongside Academy ManufactorAcademy Manufactor and Gourmand's TalentGourmand's Talent, you can have a Food use both of Gilded Goose's ability to create an infinite combo
Thats not all though, they also read, Whenever Umbris or another Nightmare or Horror enters the battlefield under your control, target opponent exiles cards from the top of their library until they exile a land card. On average, youre only going to get around three cards per creature this way, but that still means that Umbris comes in as a 4/4 the first time around, assuming youve not exiled anything else, and then just continues to grow from there