Whatever game aspect you need to improve whether its mana, cards in hand, or stats in play, Atraxa will help you get there
For instance, in an Archimandrite deck you could gain a bunch of life in your upkeep and first main phase to add a big +X/+0 buff to your commander, then use Alteration to turn it into Giggling Skitterspike
- Two foil commanders
When this creature dies, you may draw a card
It only takes three defense counters to defeat, tying it for the least among the battles, which is also solid, and then the backside is fine, as a 4/4 that can make some extra mana
Boom Scholar, in particular, can reduce the cost of exhaust abilities from other permanents, further accelerating your game plan