I have this idea for a mission that unlocks ability to take 2 smallest planets in your database that you own and throw them into the orbit of a Colossal size planet it increases it size by 1 each and all resource by 2 that on it as well as well as increase resources on Colossal planet by 2 also planet number reduced by 1 limit 2 planets per Colossal 200 energy to use. The 2 planets still show up in your database like before. any idea for mission name and details. if the planets can be upgraded it will not let you do it until you do it first.

how many completions would said mission have?

I like it. But make it have at most 5 completion and use 100 warp gates per each completion, and 200 or so energy per round to make it not too overpowered. And also make those planets turn into moons, nor remain in database, otherwise it does not make sense.

better yet, how about An artifact that will take 2 planets and put them together into one bigger better planet,?
I can not remember who already posted both these ideas.

it could only be used on average or smaller as this would create a colossal planet.

CommanderL I think i go with your suggestion on completions and warp gates number and energy for mission and 200 energy to use the ability. it stops you if the 2 planets can be upgraded or selects 2 others or allows you to select 2 other you want. planets become moons no longer in your database access from your planet. planet and 2 moons defense attack clock times 3 from orignal value. you could have 2 mission one throw 2 planets together and another with a ability. The throw 2 planets together mission unlocks after ability mission. The artifact mission you can keep repeating combined 2 planets can't equal Colossal. requirements for each artifact misson completed 100 warp gates 200 energy.