Now we've run the numbers, let's address the Donphan in the room, shall we: why does Pokmon card size or weight matter enough for us to bother talking about
No, because of their dimensions, they require oversized sleeves specifically designed for 6x9 cards or Planechase-sized cards
Emet-Selch, Unsundered does make for a good Commander, its true, but it also slots really nicely into Dimir and Sultai graveyard focused builds
It can take cheap equipment like Sword of the Animist and fly in to get combat damage/attack triggers with them
As the best shapeshifter in Magic its also a pretty great card to pick up in Draft because you can then draft all 5 colors if you want to
The strategy is simple: Cast big dragons, and get Atarka on the board to give them double strike