Ok, the usual 'help me' shout before every event :3
Here's my box:
Do I have any hope against:
-Heroes Descended: Already got Siegfried the Blue Champion from the Water Carnival we got a month ago, so I need a Highlander without wasting stones.
-Hera-Ur Descended: Legend/Mythical?
-The Goddess Descended: Legend/Mythical?
Hereos: I don't remember what I've done to clear this. Honestly, just try and piece together any of the teams shown here:
PDX. Loki/Luci or Lunar/Luci team looks doable with your box. I hope you have a few Rainbow Keepers available...
For the next two, you can't do Mythical. Legend, maybe...But Mythical won't happen. You need to focus on a team and level it. Since you don't have Horus/Kirin/Ra, I suggest pumping your Loki/Lunar and pairing with a Luci for all the dungeons. Maybe a resist team? But those rely on hearts and healing...
Hera-Ur: I'd probably try to do Lunar/Luci with Hera/Hades/Joker/???. Hera-Ur hits pretty hard and requires manual healing every turn. RK is nice because it reduces damage. Joker requires careful use to make sure you get your heart orbs. You need to be able to combo well. You could try to do a resist team Meteor Volcano Dragon/Luci, but that requires a lot of levels and work to piece your team together.
Goddess is a bitch. Do you have any Rainbow Keepers? How about 3? You CAN grind her down, but you need a team of keepers to help you not die.
PDX has some good team ideas that you can grind Legend with. Max skill Siren is pretty much a must, though. Loki/Luci or Lunar/Luci with Siren + 3 RK's is doable. Slow, but doable.