The idea was to have the party collect the pieces of purple rock and bring them into the temple. The temple was to be for Ogremoch, the earth Archomental. Collectively it would have been as though there was some type of alter for Ogremoch that some force gave a big kick to, which is why pieces were scattered here and there. In the temple were two piece, four others are what lay about.
I asked the players to envisage the olympic rings, which made it easy for everyone to keep in mind, only this one has six rings, and, you've got four. They were down with that.
We restarted at the doorway to the temple with a bunch of dead bugbear bodies near by. They walked in; the lighting increased and, after a decent check (int + wis + level on percentiles) they noticed a hum from the rings, which were currently in four backpacks on four people. Inner they went; room got warmer, lighting better still. Beasts came out looking, not demented but (hmm) upset. One or two had a hand at their ear. All were dispatched.
There was a tunnel that looked like living quarters, and, greater doors that were clearly temple-ish. At that point one, Embla the dwarf, had the smart idea of taking their rings back outside and burying them in four separate holes. No wait. Let's keep one as a sort of beacon.
Good move, that. I was going to have the floor (plain earth) start to roll and one or two basic earth elementals pop up like zits. As the battle would be going I was going to have them move physically to be in a way that anyone near the two would have their ring pulled through their backpack to join the two. Ultimately, more rings, higher percentile chance of Ogremoch appearing. He was going to be nasty.
But this did not happen. They grabbed the two and, ultimately, decided to be on their way, back off to Doc's Island to run the Fane of the Egg (mud sorcerer's tomb) to see if they could solve that riddle and be the ultimate champions.
[how and where could I open a new discussion on playing through the mud sorcerer's tomb?]
Lastly, on the way it happened once. Six people were carrying six rings and just through natural movement, and lack of consideration, the six rings were properly aligned. The characters were frozen and, like a web, a series of lights connected each to the other. Ogremoch appeared, sort of. Do you remember the video chess game they played in the first Star Wars? It was that type of graphics. Ogremoch looked at the party and knew this 'calling' was an accident and would be a problem for him. "I see you,' he said. "This is not cool. I see you and will find you. But not now" and poof, he was gone.
The party smartly decided that one person should carry two rings, thus inhibiting their ability to be so aligned.