***TRIALS RESPONSE***This is quite similar to some unupped darkness decks that I've used, always with great success. There are only some very minor changes that I would like to see made to this deck.
Firstly, although I usually like to insist on decks being 30 cards, this seems to operate quite well with 32. If you would like to slim it down to 30 cards, I would recommend removing the Vampire Stiletto and possibly one Drain Life, although I do feel like 32 cards is perfectly fine in this case.
Secondly, I'd like to see one drain life replaced by a steal. With only 2 in a 32 card deck, you'll have trouble really getting around Dim Shield chains, which the Aether elder can pull off. Having 3 steals may not seem like such a significant change, but it will greatly increase your chances of drawing them when you need them (drawing them an average of every 8 turns instead of 11 makes quite a difference).
Thirdly, and this is very minor, switch out six or seven of your 13 pillars into darkness pendulums - this will slightly improve your chances against earthquake, which one of the elders uses.
Finally, you may want to try and add in some nightfalls. The +1|+1 effect will multiply as you put out more creatures, and this can quite easily turn into a +6|+6 blanket effect quite quickly. I'm avoiding doing so in the final product because I don't want to trade anything out for it, and the deck is big enough as is, but you may want to try -1 Stiletto, -1 Drain Life, +2 Nightfall
After making these changes, you should hopefully see some slightly improved results (but I may be wrong!).
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With nightfalls:
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