Shadow got it right. Its just EX.seismo Superjump dash down first hit of standing s into EX.seismo. The first hit of her launcher is a set amount of hit stun, which means she could do it forever if she had the meter. Plays into her heavy tk/feint infinite too.
So, my combo with one EX TK, Jam Session, and an ending super only does 824k. I think I’m doing something wrong here. -.-
Any suggestions for getting a beefier combo? Right now I’m doing st.LMH, TK L, EX TK, Seismo L, one rep of box dash into launch, sj.MMH dj. MHS, Seismo L, Jam Session hits, j.HS, BK H, Burst Time.
Also, what should I do if I hit someone out of the air with Jam Session?
Well the combo is fine. You just need to add your other assist in there somewhere before you call the dante assist because that is the combo ender.
If you hit them with jam session somewhere above normal jump the easiest thing to do is jump and do a j.S into EX.BK. If you want to save meter (which is much better) you can do the stair kick loop. A little hard to do but once you get use to it its such a great tool.
Unless you have another assist that allows Viper to get another Burnkick relauch thats the beefiest it’s gunna get without having to do some impractical Thunder knuckle feints. However if you do have another assist you can do this to get at least 950k.
J.S->MH-> M.TK-> EX.TK-> L.Seismo-> IAD-> J.HS-> MHS-> J.MH, DJ.HS-> Call Assist-> L.Seismo-> Tigerknee Burnkick-> Land. S -> J.HS-> Call Dante-> L.Seismo-> J.HS, EX.BK -> Burstime.
My Viper doesn’t really use assist in her combos, simply because none of them work. However the combo above is what I was able to do while experimenting with Amaterasu and Dante. Damage was around 950k-. (Don’t remember)
If you dont mind me asking what assists do you use. Because It feels kind of hard to find assists that dont help Viper extend her combos
Well My main team is Zero(Handeki), Viper(Seismo), Taskmaster(Horizontal Arrows). Taskmaster is replaced with Senitnel(Sentinel Force Upwards) when I feel the need to.
So with Zero’s Handeki and taskmaster arrows I can do LMH, M.TK.,(Call Zero/Taskmaster), EX.TK, MH into launch bla bla bla, right. But here’s the thing, I have to call my assist right before I do the EX.TK so the problem with that is I actually end up getting a Snap back half the time. Not only that but if Viper is in it’s usually because Zero is dead, so I’m using taskmaster as my main way to get in and most of the time that leaves taskmaster unavailable to be called so early in a combo.
But besides that I haven’t found any other ways to incorporate Zero, Sentinel or taskmaster in my combos. If you have any ideas let me know, believe me I wish I could do more than just the box loop 
I can post a video later because I run Viper/Doom/Sentinel and I have some combos with the Sentinel assist for Viper.
For the task and Zero assist im not sure if this is what you are using but you can do L M (call task or zero) H M. Thunder Knuckle. And then do a second magic series.
To do this with sentinel assists its kinda weird you have to call Sentinel before you hit them. Also I saw some combos here with Zero’s other assist.
As for the combo with Sentinel assist the timing is weird but its not too difficult. What you do is call Sentinel as you launch them into the air. Then if you are in the corner you have to do air series: H (double jump) H S. Then you land and jump again and S to knock them to the ground. Midscreen you can do the same thing, but after you launch and call Sentinel here is what you have to do: MMH (double jump) MHS. They will be knocked into the Sentinel drones, and you dash forward and S them to the ground. Im still exploring Sentinel assist with Viper as I think there is alota stuff you can do with it. I will try to get a video up ASAP. it will be bad quality but it will have to do lol. Im sry if this stuff sounds confusing.
Yeah that Zero/Task combo I’ve played with before, it works but kinda inconsistent because if you don’t call out zero at that exact moment the opponent will fall out, it’s great extender though and adds about another 100k to my combos, but I’ll only use while trying to style or something.
However I am looking forward to that Viper/Sentinel vid, sounds sick. Thanks in advance!
Hey there, long time MvC3 player and forum reader, haven’t had much to add to the discussion (leaving that to the experts here) but just adding that getting that extra j.C after air burning kick feint and assists that help her relaunch after air A Burning Kick have helped me bump up her damage a lot. Been experimenting with Haggar and Phoenix, and with lariat and TK Overdrive I’ve managed to get her 1-meter combo up to around 860k, and with Giant Haggar Press DHC almost 1 million.
This probably doesn’t let me rapid Seismo or get in as many hits as with Dante Jam Session ender, but I definitely see how fun it is to get a lot of damage AND get all that meter right back. Looking forward to Ultimate. 
So what’s the deal with seismo cancels and seismo spam? I still use X-box controller and it’s pretty difficult to do more than three in a row. I know you’re typically supposed to jump cancel between. Does anyone perform them well with controllers or is it something that’s just much easier to do with stick? I just haven’t bought a stick yet and learned it because I don’t have the money for one yet. Or perhaps there is a more simple way to do it?
Lenaire I can do it just fine on a controller, it just takes practice. Although I can rapid seismo much easier on the left-hand side.
Hey here is the video with the Viper Sentinel combo I promised: http://www.youtube.com/watch?v=_GYl5UaaMsI. There are two combos. It also has my fails. The first combo is at 0:15. THe second combo is at 0:48. Sorry if its hard to see. I had to use my phone to record the video and I made a mini stand out of books lol. The fails were cause I did this in the morning when I was still kinda tired.
Here are the inputs:
0:15: M H qcf M qcf S dp. L IADF j. H j. S (land) s. h s. S (call Sentinel Drones) sjc j. H (double dump) j. H j. S (land) (drones hit) j. S dp L. EX. bk. s. S sjc j. H j. H j. S. dp L. Burst Time (dmg: 916,000 costs: 2 bars)
0:48 M H qcf M qcf S dp. L IADF j. H j. S (land) s. h s. S (call Sentinel Drones) sjc j. H (double dump) j. H j. S (land) (drones hit) Tiger Knee H. Bk s. S sjc j. H j. H j. S. dp L. Burst Time (dmg: 850,000, costs 1: bar)
Hope this helps.
You can’t do the normal relaunch combo with sentinel?
um I dont think so. Ive tried but I could not figure out the timing. The drones come out really slow. These combos are not as good as ones other have posted but they are okay.
Which Combo? Explain?
@Destroyer, Nice stuff thanks for the video, the damage is really good for something so simple. Question though, I know in your annotations the first seismo is just a regular seismo but in the video it looks like an EX Seismo?
I’m talking about the one where you do seismo, call assist, then go into JC burnkick.
Um im pretty sure its light seismo because I looked at the bat at the bottom and it did not go down or anythng. Maybe the camera moved or something cause I was leaning it against books lol. But that parts its the normal viper stuff you see people do after ex. tk. I might have accidently dne ex seismo, but there should not be a point to do ex seismo.
Also for anyone who can do the step kick loop I was wndering if that part I use ex. burn kick could be replaced with one rep of the step kick loop or if the sentinel assist can be used to o another rep of the step kick lop or extend it to something better.
@ShadowGT. I could not figure out the timing. It might not be possible because droens is not a true block string, meaning they could drop out after the first drones hit. But this might change in ultimate
I looked at the viper technical thread and saw the proper way to do it. I’m starting to learn it the right way now. It does take practice, my muscle memory is getting there. the first two are easy but it’s just hard for my mind to adjust to the steps after, buffering forward after diagonal up and then just repeating. It’s actually really simple since it’s just a three step process, but I think I’m getting it now. Viper is just an awesome character and totally worth learning even though it takes time. So I decided to just pick her up for real this time.
Alright guys, I’m having a chrisis over here. I need someone to tell me I’m missing something so I don’t have to act on the agonizing urge to facepalm the shit out of my myself.
Do your basic box-loop BnB. Look at the damage.
Now do the same thing, except instead of a box loop, do seismo xJCx H.BK > s.HS > rest of combo. Also look at the damage.
This does slightly more damage than the box loop.
This causes significantly less hitstun decay than the box loop.
This travels nearly the same distance as the box loop.
This is a shiton easier than the box loop.
What. The FUCK. Is the point of the box loop?
On a separate but slightly related note, I have discovered that C. Viper can self-relaunch in lvl1 XF using the same Seismo xJCx H.BK pickup.