Hello there,
your deck is really cool, thanks for all your effort and congrats for all this stars. I myself really enjoyed playing your interpretaion of
the scarab god.
Theres an important ruling detail about your commander concerning the
Consuming Aberration. When you're eternalizing the
consuming aberration it's power and toughness is still equal to the number of cards in your opponents graveyards. Eternalizing works on a layer which deals with copy abilities and comes before layer 7. So it will first be a 4/4 in an earlier layer and then be adjusted with the characteristic defining ability of the
consuming aberration (power toughness = number cards opponents graveyards) taking place in layer 7, which generally deals with the power and toughness of creatures.
I hope this is of some help.