Idea of the deck is to copy and multiply a stonepowder alchemist multiple times. Giving it echo and drawing it from the void helps with card draw, has very nice cycling but falls into the trap of being 4 influence so getting screwed happens a little. Seek power and secret pages helps fix this though. Basic influence you are going for is 1 time 2 justice 4 primal and 1 shadow. After that you just need to draw your way to victory!
Channel the Tempest is good for removing threats or finishing the game/cycling to refresh your alchemists.
Do not be afraid to put any copy cards on the bottom of the deck, your primary focus is to find an alchemist and after that you will focus on stabilizing.
Update: Considering the comment I added a single excavate and Makto for more minions as Makto is also a good target for copying /echo
I'm also thinking about Protect or Eilyn's Favor, since Steward of the Past wrecks the deck really hard, blocking the Summon effect could be useful, also saves the Alchemists from silences (for which Safe Return could be an alternate solution).
Unfortunately copying with Mirror Image or Strength of the Pack also copies the status of Revenge - if Revenge has gone off already, then the copy also has it turned off.
I made some changes, and I had the deck go off with echoing Alchemists - the idea is cute, but it's too easy to disrupt (as a control deck, it's vulnerable to Azindel's Gift in addition to void-hate), it's slow to win (like Chalice) but still has to trade card-for-card to stay ahead (unlike Chalice), and the powerbase is too inconsistent (it's possible that Secret Pages helps there, but I cut all copies of it).
The changes I tried:
Added:
2x Excavate
1x Protect
1x Seek Power
3x Second Sight
Removed:
2x Dark Return
1x Scheme
3x Secret Pages
1x Celestial Omen