How about...
Mark of Light
Upgraded Sundial x 6
PU x 6
Lightning x 6
Aether Dragon x 6
Phase Shield x 6
umm...20 aether pillars? Not sure how many would work.
The lightning is for emphasising the card advantage given by PU and immortal creatures. No immortals are included because they are not particularly good for 8 aether. Against Seism, for instance, they will be doing 1-2 damage depending on whether you upgraded them or not.
This contains most of the damage of your original, and the speed aspect thru sundials, and stays at a relatively modest 50 cards. Some of your creature control costs nothing to play (sundials), whilst the lightning only costs one, and best of all it's mostly aether.
Feel free to throw in lobo/electro if you have it...maybe take it to 19 pillars.