Anguished Unmaking Ashen Rider Athreos, God of Passage Athreos, Shroud-Veiled Blood Baron of Vizkopa Blot Out the Sky Breena, the Demagogue Brimaz, Blight of Oreskos Carmen, Cruel Skymarcher Clavileo, First of the Blessed Crime // Punishment Dark Leo & Shredder Daxos the Returned Deathpact Angel Elenda, the Dusk Rose Emptiness Eriette of the Charmed Apple Extus, Oriq Overlord Felisa, Fang of Silverquill Frodo, Adventurous Hobbit General Kudro of Drannith Hashaton, Scarab's Fist Karlov of the Ghost Council Kaya the Inexorable Kaya, Geist Hunter Kaya, Ghost Assassin Kaya, Orzhov Usurper Kaya, Spirits' Justice Ketramose, the New Dawn Killian, Decisive Mentor Mister Negative Moira and Teshar Nalia de'Arnise Obzedat, Ghost Council Pest Control Ravos, Soultender Scriv, the Obligator Seraph of the Scales Shadrix Silverquill Silverquill, the Disputant Sorin, Grim Nemesis Sorin, Lord of Innistrad Sorin, Ravenous Neonate Sorin, Solemn Visitor Spirit-Sister's Call Tomik, Wielder of Law Tymna the Weaver Vito, Fanatic of Aclazotz Vona, Butcher of Magan Withar, Cocoon Keeper

Nightmare was a core set staple since Alpha , and its probably better in mono-color decks and in environments that let you run multiples
Theyve become a beloved typal strategy for players that want to build up their pack and become the alpha of their Commander table
Night's Whisper, Treasure Cruise, Dig Through Time, and Fact or Fiction are all staples for a reason
This card depicts Primal Kyogre in all its glory with the same Mega Evolution format that was used for other Megas in the TCG