Getting Construction Pylon and Scrap Metal in play out of turn is my favorite. Especially if you have Flash Forge in hand.
Lot's of limited cards isn't always a bad thing, like on AZ it allows him to bridge between ongoing and Equips and greatly ups his odds of success.
I'm surprised nobody has said this yet but the Sentinels pair incredibly well with SS Tachyon, because the large majority of their deck consist of high damaging one shots.
EDIT: I did not realized I poseted the exact same thing earlier. I thought this was a recent thread, sorry for the redundancy derp
No apologies needed!
Since this was brought back up…
Anyone have time to calc this for Captain Cosmic and Skyscraper? 
Captain Cosmic - 42%
Sky-Scraper - 48%
Thank you! 
Quantum mechanical analogies are appropriate for Super Scientific Tachyon!
What we really care about is not the odds of getting a successful Experiment for each deck, but the expectation value of an Experiment from each deck. This would be a weighted average: the odds of an Experiment succeeding times the “impact factor” of that successful Experiment. So a hero whose deck has abysmal odds of success but contains two one-shots reading “the heroes win instantly” might have a higher expectation value than a hero deck with high odds of success but all cards read “deal 1 target 1 melee damage.”
Of course, defining that impact factor…sounds like a good master’s thesis. So we’ll probably never really get the bottom line here, and we’ll have to live with the anecdotal experience that Experiments on Unity can be awesome.
Another factor is whether you have someone on the team that can help you draw from the trash like AA, Tempest or Scholar, or whether you can do it yourself with Instrumental Conjuration or Robot Reclaimation. Then even an 'unsuccessful' Experiment might put a valuable card someplace you can get to it.
True and awesome! Now if I could just find a university where that could be MY Masters thesis…
The raw % are good, but one of the reasons why I almost never use SS Tachyon with another hero is because SST has a bunch of one-shots and bursts, so the chances of playing something are good, plus, even if she doesn't dumping a burst into the trash from the bottom of her deck helps her end game, so it's a win big/win small no matter what. How many other heroes benefit from having cards in their trash consistently?
Legacy seems like a good choice because he's not going to screw himself, or others over. Nightmist is dangerous to herself (and others, with Oblivion), but if she has her relics set up it could be a good panic button.
SST has an obvious combo with Dark Visionary and any other character that lets you look at the bottom of a deck, but I find it's more beneficial for Dark Visionary to stack the villain deck (one play per round instead of one out of three to five), so I generally only do so if I draw a Precognition (IIRC, the one that lets you stack with the top 3 cards of the villain deck) or Wraith is in the game. What other characters would let you stack the bottom of a deck without the option to use it on the villains?
…also, Tachyon is probably the only hero with nonzero expectation value for a failed Experiment, because even if the cards go to her trash she charges up her attacks!
Unless the cards that get more powerful with burst cards in the trash are also already in the trash thanks to previous Experiments...
Depending on how far they were down the deck, you weren't going to see them for a long time anyway. However, SST does work better with a hero who can recover trashed cards is helpful for those situations.
Sure, but I don't mind seeing Light Speed Barrage later in the game, that means I would be drawing more valuable early card games and not have my hand crowded with cards that I probably won't use until the moment they can take out the villain. So not seeing it for awhile is just fine by me.
It's definitely good having those cards later on, but my experience playing her is that it's helped Tachyon throw out large nukes on the villain much earlier than she'd been able to do otherwise. I don't have the numbers, but I'd be curious what the average increase is in her LSB damage from using her power on herself every turn.