Heart-Broken Hourglass

Heart-Broken Hourglass enters the battlefield with 5 Hour Points on it.
Whenever a creature dies, add one Hour Point onto Heart-Broken Hourglass.
Pay 2 Life, {c}: Add one Hour Point onto Heart-Broken Hourglass
When there are 5 Hour Points on Heart-Broken Hourglass, remove all tokens on
Heart-Broken Hourglass. Take another turn after this one.