If your opponents eat up your mobilized attackers, youll draw cards, and if they let the 1/1s slip through, theyll take multiple instances of chip damage
Once you've built them up, Hourglass of the Lost can be exiled to return cards with a mana value that matches your time counters back to the battlefield
A decent card for emptying your opponents options while growing your own
Theres an abundance of card draw, for one
As such, Historic's banlist is fairly large since there's been plenty of powerful cards released in Magic Arena (largely thanks to bonus sheets)
Yes, it provides an extra reward for playing his game well (and building around making your opponents sacrifice things), but isnt there enough satisfaction and power to be had with foisting awful choices upon your opponent