A well played Machaka shouldn't allow a late game to occur
But seriously, they'll have plenty of death and nature gems by late game, so a few empowerings aren't that expensive, especially when it's for a Tartarian factory. Plus they can probably count on the Fire royalty and the King of Banefires, and have a decent shot at the Earth royalty.
I really like poison golems for Machaka. They're kinda rare, thanks to it's weird D/E summoning requirements, but Machaka can crank them out by the bushel, GoR em, and turn them loose under Heat from Hell and Poison Cloud spam. They're reaper trait goes well with Volcanic Eruption spam.