At the beginning of your upkeep, put a time counter on Infinite Hourglass.
All creatures get +1/+0 for each time counter on Infinite Hourglass.
{3}: Remove a time counter from Infinite Hourglass. Any player may activate this ability but only during any upkeep step.
Near Mint - $0.50
Near Mint Non-English - $0.50
Lightly Played - $0.50
Lightly Played Non-English - $0.50
Played - $0.40
Played Non-English - $0.40
Heavily Played - $0.30
Heavily Played Non-English - $0.30
Damaged - $0.30
Damaged Non-English - $0.30