It generates value immediately, since you almost certainly attacked Invasion of Gobakhan to defeat it, and thats not too hard to do, since the Invasion only has 3 defense counters
for non-Windows platforms which make generic code supporting different operating systems yet another nearly impossible task
All you have to do is play spells already in your graveyard
Now yes, the standard version plays the same, but when you're getting ready to win it all, why wouldn't you have your cards be the prettiest they can be
I cheated and went ahead and flipped over the last card in a moment
As YouTuber In Third Person explains, Serena provides so much utility, a player can discard three cards, pick five cards from their deck, and force their opponents to activate their V cards with just this one card