It makes rolling large amounts of dice easy and the scroll function of the bonus makes it easy to switch between rolling +5 to hit and then rolling for damage with that sweet, sweet +2. When I DM, I almost exclusively use this because I’m able to switch quickly between rolling 1d20 + 10 to hit against the lv. 1 wizard and then rolling 3d4 + 1 damage just to make the player cry when the wizard dies. It’s weird that not as many players show up when it’s my turn to DM.