To some, that may not seem better than Battlemages potential
It only costs four mana and can potentially give you a total of four card draws and four Rabbit tokens
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
Before we start going over what makes a good commander, lets first understand the concept of color identity
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
Im sure that will spike when the game becomes widely available over the next few weeks