new mega ex pokemon cards POKEMON~100 CARD LOT~GUARANTEED EX. EX. FULL ART HOLO OR SECRET RARE! : Toys & Games Mega Manectric ex 050/132 Me01:

It has passable starting point and it's activated ability has some good applications in the format, in addition to just being solid on it's own

Based on that, you should start adding cards

The white and green elders are the least attractive of the bunch, but will still find homes in many commander decks

Spore Frog to fog every turn, Seal of Primordium to keep wiping out artifacts and enchantments, Pernicious Deed to keep board wiping, Plaguecrafter to keep them sacrificing creatures or Planeswalkers its strong stuff when it gets going

I also follow the singleton rule atm, I'm aware that it is not a popular thing to do here