Before we start going over what makes a good commander, lets first understand the concept of color identity
It only costs four mana and can potentially give you a total of four card draws and four Rabbit tokens
If you cast Let the Galaxy Burn for X=3, the total mana value is 9, which means you could cascade into a 7- or 8-drop
So, my evaluation comes from my own biases, which boil down to: play the sort of cards and decks that lets everyone at the table have a chance to breathe, play Commander, and have at least a decent chance to do the thing that their deck wants to do
The account you register and play with in the WPN store is the same account that will receive MTG Arena cards
Theyll be Standard legal again next year, Id wager