So I was talking with friends about Sorrow's Path and how to best abuse it. Mogg Maniac came immediately to mind, as did cards like Saber Ants. To make them survive, we need to make them indestrutible somehow. Eldrazi Monument gets us there, and the tokens we get make us survive better.

Not sure which Commander I want though.

Green = ramp to get the Path out.
Blue = Mind Over Matter, with Urza's Blueprints to draw my library and discard it to Path. Also ARcanis and Teferi's Response to protect the Path.
Red = Mogg Maniac. ALL THE TIME.

With Mogg Maniac and a Darksteel Plate, I can essentially kill the table once I draw 20 cards.
To protect myself? Glacial Chasm or perhaps a Basilisk Collar on the Maniac.
Any other ideas?

I went Mardu instead of Temur so I could get access to Kor redirect creatures, more indestructible effects (like Boros Charm), Wall of Souls and Souls of the Faultless, and Spitemare and Boros Reckoner. I don't specifically have Sorrow's Path in my deck, but it would fit nicely in a lot of ways. If you really want to do Temur, then I'd be tempted to play Riku of Two Reflections. That way you can double up on Mogg Maniac and Saber Ants, and some of the cooler spells can be doubled as well.

I would suggest these cards for your deck that I've played in mine:
Impact Resonance--such a nice way to double up on damage
Inquisitor's Flail--double damage on Mogg Maniac
Chandra's Ignition--can deal a ton of damage, and give you a possible sweeper effect
General's Regalia--you want to deal as much damage as you possibly can to Mogg Maniac all the time.
Pariah's Shield--so you can go all-in every combat with your creatures.
Nemesis Mask--while it doesn't really work well with Sorrow's Path, forcing everything to block goes a long way in getting a lot of work out of Mogg Maniac.

EDIT: aha, just thought about the access you'll have to fight mechanic cards with Green. That should be pretty good for you too.