At the beginning of combat, you can move a counter from one of your creatures to another, letting you line up the best possible attack
There have also been other small improvements, such as updating the "Add Lands" tech to handle 100-card decks properly
The selection is enormous, the prices range from incredible deals to absurd ripoffs, and the buyer experience depends entirely on which seller you happen to buy from
The Mirage designers made Charms to add smaller effects to decks
In any case, you want to be combining enablers like Teferi's Puzzle BoxTeferi's Puzzle Box, Howling MineHowling Mine, and the original Wheel of FortuneWheel of Fortune with payoffs and damage dealers like Fate UnravelerFate Unraveler, Sheoldred, the ApocalypseSheoldred, the Apocalypse, and Razorkin NeedleheadRazorkin Needlehead
Thanks to the perfect fixing it offers, the card is an auto-include in any Commander deck running two colors or more