Timeline Confusion

This artifact enters the battlefield with X charge counters, where X is the mana spent to cast it. At the beginning of an opponent's upkeep, remove a charge counter. At the beginning of your upkeep, add a charge counter. When this artifact reaches 0 charge counters on your turn, sacrifice it. You may then take control of X permanents from any players' hands, battlefield, graveyard or exile
{5} Remove a charge counter