Psilo and I used to talk about 2C and Acid combinations for hours on end.
IMO you just can't beat a well timed 2C*+LSD combo for earth shattering/life changing trips. Fungi and LSD is awesome but, I have far surpassed the shroom+LSD combo trips by working out my sweet/peak effect spots with both chemicals (LSD+2C*) and sticking to strict dose/timing schedules. Ahhh the memories are flooding back now!!!
I found timing to be very critical for best results when combining these substances. Each 2C* has a sweet spot where it will best synergize with LSD, most people with my level of experience with such combo's had similar opinions to me but, a few trippers prefered other dose/timing regimes to myself. Each to their own...
My personal top 3 to mix with lucy in descending order would generally be as follows...
2C-B: After many trips with these 2 old favourites I found 2C-B best taken about 15mins after the LSD comeup, when the visuals start to take effect. I rate this combo so high due to it's user friendly effects when taken at roughly half the dose you would take when dosing either substance on their own. It rarely got pear shaped in high doses IMO and never made me run for the safety of my tent at a bush doof (I have had terrible experiences with the likes of 2C-I and 2C-P when combined with LSD and don't wish that upon anyone!).
2C-E: This chemical can have a pretty rough comeup with nausea and bodily discomfort. It generally takes 90+mins to start to shine and then lasts for a similar time frame to that of a 200(ish)ug LSD dose. For these reasons, I found it best taken 1.5-2hrs before dosing the LSD. When dosing LSD at the peak of the 2C-E experience it can usually be felt within 10mins and to this day would have to be my most visual and intense mind trips by a good 25%. I struggle to mix these 2 chems in the company of others and found this combo difficult to handle unless I was with 1 or 2 close friends, tripping around a camp fire in the secluded Australian bush. Even when I can't string a sentence together and I'm struggling to do simple tasks such as opening a drink, I have always been able to centre myself by fire twirling when in the depths of this trip. It's got me fucked how I can fire twirl/drum like a demon on this combo and yet I struggle to remember who I am, how to open a drink or even think for a second what baseline is/was like. Heck, I usually have to get someone to open the fuel and dip my staff but, once that thing is lit my body just flows pure creation through this intense and beloved art form
2C-D: While I don't rate this one at all on it's own, even at doses of 50+mg, I have to rate it highly when combined with LSD and other psychs. As nanobrain once famously posted "2C-D is pharmacological tofu". I couldn't agree more with that statement and I have had a blast "dipping" away at a baggy of 2C-D in all sorts of settings and I can't remember a bad experience when combining this one with LSD and various other substances. I don't suggest taking unweighed doses of any RC but, if you had a choice, this one is certainly on the safer end of the eyeballed/finger dipping RC dosage scale.
99% of my 2C+LSD combos were done with decent liquid LSD and properly measured then remeasured doses of research chemicals from reputable sources.
I must add that these combos are brutal in what they can create/awake in ones psyche. Definitely not one for the faint hearted and not to be taken unless you are in the best of the best trip settings. I have ruined what should have been amazing occasions by over doing these substances. More than once it has taken me days or even weeks to really get my mind back to a civilized playing field. It's easy enough to come unstuck at low doses when combining these substances so only go down this path if you are in for balls deep psychonautical experiences and you know you will be in safe hands for at least 12hrs. LSD is unpredictable enough without the wild card of a RC thrown in there. Play it safe and take all reasonable precautions in the lead up to and during such an intense trip. I highly recommend not having any unwieghed RC's on or near you, as, I have seen this one end badly far too many times. If you take the right precautions you won't be dissapointed, just be prepared to be shell shocked and rocked hard by this one friends.
It's about time I got back on the horse and headed bush. It's been far too long since I powdered some acid with a phenethylamine
Happy tripping