For Expanded, you have Virizion-EX, though it still requires two Energy attached to it in order to function. And there's that awesome Verdant Wind Ability.
In Standard, your options are limited and / or situational. M Sceptile-EX is probably your best bet, allowing you to attach two Grass Energy from your hand, do 100 damage, and heal all damage from the Pokemon you attached from. It still requires two Energy to use the attack, so you're going to have trouble against disruption decks unless they get a lot of Crushing Hammer tails.
In terms of faster options, you're much more limited. Landorus FFI can attach any Basic Energy to one of your Benched Pokemon, but it requires a Fighting to use Shout of Power. Still, this is becoming a thing with Smeargle BKT to help balance the Energy types if necessary. You could do a similar thing with Yveltal XY if your think the extra 10 damage from Oblivion Wing is worth it (and/or a Dark typing instead), but since it can only attach Dark Energy from the discard, you will need a lot more help from Smeargle to get Grass Energy into play.