2004-10-04 : If you and your opponent both flip at the same time, you can see your opponent’s result before choosing which result to keep.

2013-04-15 : If an effect tells you to flip more than one coin at once, this replace each individual coin flip. For example, if an effect tells you to flip two coins, you’ll first flip two coins and ignore one, then flip two more coins and ignore one of those. You don’t flip four coins and ignore two.