You can use that ability, and still attach one energy card to a Pokmon
There's also Master of Etherium, a blue artifact creature that gives +1/+1 to allied artifact creatures, and white offers Blade Splicer and Master Splicer, which can create and enhance some 3/3 Golem artifact creature tokens
Covetous Urge is a very powerful spell, as wellit lets you pluck any nonland card from an opponents hand (or failing that, graveyard) and cast it (you do still need to pay for it, but it does fix your mana)
Product/Set NameMega Symphonia
I mean, I guess, but I hate that philosophy of Commander
The easiest way to do this, outside of sourcing all of the cards yourself, is to buy one of the premade decks that Wizards of the Coast sells