Avatar Aang / Aang, Master of Elements The most intriguing part of Aang, Master of Elements is that the cost reduction actually affects generic costs, which cards like this almost never do
I could keep it at 45, and either run a copy of something like Mezuki, or run 2 Co-Forbidden cards which would likely be of either Psy-Framelord Omega, Card Destruction, Dark Hole, Pot of Extravagance, or one of the Solemns
If you can use other things to defend her, though, she can really put in some solid work - especially alongside other Elspeth cards since the rules change surrounding planeswalkers
But we need to fuel that ability, so we need heavy amounts of life gain
It's skipping its turn
They are brilliant in that they are an easy way to avoid having to use a Trainer for something while also providing an Energy