Adding more value to him is the fact that late in the game you can transform him and either dig for more resources, blow up any creature/planeswalker or recur something from any graveyard
This can be done by activating Selenia's ability numerous times while the activations are still on the stack, allowing her controller to pay absurd amounts of life, then using the aforementioned spells to topple the life totals of one's opponents
With that said, for me this list begins with Aethersquall AncientAethersquall Ancient, which while expensive, is the threat that I have seen win energy decks the game time and time again
And if you're sitting at your local game store and you hear someone singing I've got a golden chiiiicken in Charlie Bucket's voice from the other side of the store, rest assured they hit the jackpot with one of these
Opponents think twice before picking a fight
I will be going over my top 10 cards from the set