Journeys through Spacetime

I have to do several tasks. In one my comrades stop halfway through and I have to do it myself. I had float (how did I not become lucid!!!!) through a garden singing like a bird.

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With 3 friends, we all do plays, and one all together. The 'together' was like 'Inception'.
I cannot believe I did not become lucid!

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Two rectangular blocks are placed side by side with a space in the middle. They shine out colours and they mix.