Shimmering Skies follows up on the recent release of Ursula's Return , which added new mechanics like cards cooperating on songs and gave the evil sea witch her time to shine
For every two players youre able to attack, you get a cheap discover 4, which converts your efforts in combat into good card advantage
Bahamut, Warden of Light Braska's Final Aeon Esper Terra Ifrit, Warden of Inferno Phoenix, Warden of Fire Shiva, Warden of Ice Summon: Alexander Summon: Anima Summon: Bahamut Summon: Brynhildr Summon: Choco/Mog Summon: Esper Maduin Summon: Esper Ramuh Summon: Fat Chocobo Summon: Fenrir Summon: G.F
Lots of these cards have special art but the normal frame, or maybe a retro frame, or perhaps a special foiling over a normal frame
His -2 is also useful because it can help temporarily remove big threats or problematic permanents from the battlefield