Magic the gathering online flip 8 coins in the same time!!

With the help of Mirror Gallery, Krark's thumb maximize its preference, by using Fiery Gambit vanish the oppenent. But, because of the replay bug of Magic online, we can only see flip 4 coins, but later I indeed draw the next Krark's thumb (the 3rd one) and flip 8 coins with Fiery Gambit to kill the opponet