If you're considering a KyogreEX/Garbodor or GroudonEX/Garbodor variant, I don't think it's very good. Not being able to use Abilities means that you can't get access to any sort of Energy Acceleration for either of them, aside from Landorus.
However, I do think that GroudonEX has some creative use with Camerupt, Zangoose, and Claydol. Zangoose is good at setting up and gets a moderately strong attack that gets around Safeguard in a single shot, Camerupt/Claydol engine allows you to get an extra Energy or 2 in play per turn, and with Magma Energy, powering up GroudonEX can be done in a single turn, and the attack in combination with Team Magma Hideout hits for 160+20. Virizion/Genesect is an obvious problem, but Camerupt can hit for Type Advantage while supplying acceleration.
KyogreEX isn't as good because it's damage output just depends on the deck you are against. I don't care how good you are at teching, KyogreEX will never kill a Virizion/Genesect deck. Sharpedo does help a lot in speeding up how quickly you can get Muk's into play, but it usually won't matter against any deck using heavy amounts of Float Stone. Also, no Energy acceleration. I guess you could say that Matt & Shelly can supply an extra Energy once per turn, but I don't think that 1 Energy off of a Supporter is nearly as good as an extra 2 off of an Ability, or even Blacksmith for that matter.
