Yes it can be staked on RPlanet. I put in an initial investment and I haven't put in any more money since. I treat it as something that I check in on twice a day and maybe 10 minutes each time. Just enough to collect my adventures, breed some more Kolos and stake my NFTs.
I was planning to write up a post eventually explaining the mechanics. If you want to start, I could send you a few Kolos to start breeding. I suggest if you do plan to do the adventures, go in the order of easiest to hardest for the bonus chance of rarer prizes. I have 6 adventure slots but I opened them before they jacked up the prices by 10x so I don't know if its worth the investment given Aether's downward price action.