Test my powers by single-handedly slaughtering an entire civilization until there is such little evidence of its glory that whether or not it even existed is a matter of debate to future archaeologists.
Then in a remote place, craft myself a very simple tomb immune to the ravages of time and inter myself in it until I am accidentally awoken in the distant future. The tomb will have two things of note: my resting place, and a clock designed to measure the flow of time compared to the scale of universal entropy.
If I am found too early, I'll be a bit miffed. Seriously guys, I'm trying to get some decent sleep.
However, if the stars burn out and every last bit of existence dies and still no one comes, I will be disappointed.
But in the distant future, if one lone archaeologist extraordinaire makes the ultimate discovery of his life, then the game shall begin.