>>23043588i wouldn't call aggron a staple of the deck, the mega aggron deck is kind of it's own thing afaik.
you just have to decide what attackers you want to focus on, play 3 of them, and work off of the rest.
I would recommend playing at least 1 heatran, as it is hard to beat as a 1-prize attacker for the deck.
I also don't think you necessarily need shield energy with the deck, but if you want to play it there's no harm in trying. (keep in mind bronzong can't metal link it back from discard)
if you focus on dialga (which is what I would do) and are including double colorless, consider 1x mewtwo and/or seismitoad, just in case you need to deal with a stacked yveltal or a setup deck. keldeo and float stones are also an option so you can abuse metal links more easily.
2/3 battle compressors are nice for metal links
2/3 VS seeker has great synergy with battle compressor and is overall really strong
maybe a dedenne if you don't like how binary mewtwo is and don't feel like playing heatran.
