Ive talked to players who do thisplayers who turn up at a shop expecting to play these cobbled together piles of competitive scrawlings because, its all they have to play with their other playgroup. Whether the shop would allow this or not aside, its not conducive to playing outside your own playgroup, and it isnt in the spirit of Commander
Commanders are usually creatures of course, so you can even play it loosely in your deck if your commander has a strong trigger worth doubling, like Sheoldred, the Apocalypse or Voja, Jaws of the Conclave
The [When Attacking] effect activates before reaction timing, which is when triggers
That's a great combination of abilities on a planeswalker that costs just 4 mana - and on a permanent that is rather cheap, considering the potential
The Pokemon TCG featured some valuable sets during the X&Y era, with Roaring Skies making its mark as one of the top dogs