However, when Radiant Greninja rotates out of the format along with Dialga VSTAR, the deck will need an alternate attacker, and Mega Aggron could fill that role. Steel-type decks usually have ...

There have been similar designs for other Megas, like Mega Aerodactyl and Mega Aggron, who became larger and spikier as they underwent Mega Evolution. Thus, the artist is working off an existing ...