FUCK FUCK FUCKITY FUCK FUCK
I've run Goemon 5 times today (zero stoned four times) and NO GODDAMN DROP.
Magoose- your main problem in life is that you don't have a Siren, and that your dudes all need to max out their skillz. Here are your priorities in life:
1. The next time Echidna's dungeon comes back, you have to run the everliving fuck out of it. If you don't want to stone it, then you need to do the math and get your xp to where you'll be able to run it X number of times to deplete your stamina, and on the last one you rank up and refresh. Start it right at 3 am, do that, and then run it again to drain your stamina. Then, wake up, run it again throughout the day. You'll still probably only get 2 skill ups per time her dungeon shows up, but you need to start the process.
2. Mondays and Thursdays when Sea Cave Mercury is on 1.5x drop, you need to run the fuck out of the 2nd stage to try and get a Mermaid. If Healer girls ever show up at an increased rate on the PAL egg machine, cash in your points on that. Once you get a Mermaid, you need to max skill her too, but that's way easier- Marine Goblins drop on Sea Cave Mercury, so run the fuck out of it to get them.
3. Since you DON'T have a Siren currently, you need to focus on getting as many skill ups for your Pierdra as possible so you can use him in a dark team. Run the fuck out of Dragon in Motley this weekend when it's on x2 drop- use the stamina math trick I talked about for Echidna's dungeon. Hoard any drops until the next x2 skill up event comes around.
4. Evolve and dump as much xp as possible into your Lucifer. Also, any plus eggs should go to either Valk or Lucifer. x2 RCV (x4 with Lucifer friend) makes such a big fucking difference on Descends.
5. Farm Baddies and Amelits on the last stage of the first dark dungeon, especially whenever it's on 1/2 stamina. Use those to skill up your Chaos Dragon Knight.
Now, normally Hera or 2 Heroes would be the first descend you should tackle... but I wouldn't fuck with Hera until you have a Siren with a bunch of skill ups, and besides you already have a Hera (guessing from the rare egg machine? dunno). You should be able to do Two Heroes with an evolved Luci team... try to level/skill up Pierda and your CDK. It's a shame you don't have a CoC Glorious Healer, as those are useful if you don't have Angelion on Healer teams, and you can skill them up using the same method I described for CDK, just with the light dungeon instead.
Hopefully that helps.
Edit: I'm not as familiar with Kirin teams, but again it seems to me that lack of a Siren hurts you there, and you also need to skill up your Echidna for that too. Forgot to mention- when poring tower comes back, run the fuck out of it to skill up your Valk.