The primary commander is Saheeli, the Gifted
This is one of the most versatile Chandra cards printed so far, doing pretty much every one of Chandras hallmarks: producing red mana, dealing direct damage, impulsive draw, and, just to add to her repertoire, copying the spells you cast as well
There are also a wide range of helpful Artifacts, including Equipment, Vehicles, or just general support ones like Lunatic Pandora which can be used to destroy one of your opponent's cards
I find I end up only playing it in decks that want a high artifact count and have good synergy with them as middle curve filler, quite a lot like Solemn Simulacrum
And then you cannot sacrifice the Goat for mana for free, just like you can the Prism, you have to tap the Pasture and then sacrifice your Goats, and since it taps for mana, you'd need to sacrifice two Goats to make a mana