Losheel's Hourglass

During your upkeep, put a time counter on Losheel's Hourglass.

Spells, abilities, permanents, and players cannot deal
an amount of damage, lose or gain an amount of life, mill or discard an amount of cards, or destroy or exile an amount of permanents greater than the number of time counters on Losheel's Hourglass
—
"Take your time." - Losheel, Clockwork Scholar