I chose marrow gnawer as the commander because, of the legendary rat creatures, the others are simply better as one of the 99
Its not the industry standard only because its the industry standard instead it has spend the last three-plus decades earning that position with the level of control, flexibility and accuracy it can provide creators
If you have your commander out, you can choose both modes, which is a plus
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities
You also get 65 Mega Charizard X card sleeves, a matching playmat, a deck box, a metal coin, six damage-counter dice, and a code card for Pokmon TCG Live