Paired with Storm-Kiln Artist, each spell makes the Treasure that pays for copying the next one
So if you want to use Zweilous without Hydreigon, I would only suggest using a 1-1 line of Deino and Zweilous in a darkness and psychic type deck

Common Charity Des Counterblow Desert Sunlight Beckoning Light Micro Ray Normal (46) Monsters Radiant Spirit Umbral Soul Destruction Cyclone Raging Earth Fairy King Truesdale Rai-Jin Man-Thro Tro Absorbing Kid from the Sky Coach Goblin Rai-Mei Emissary of the Oasis Arcane Archer of the Forest The Kick Man Anti-Aircraft Flower Chopman the Desperate Outlaw Servant of Catabolism Woodland Sprite Patrol Robo Phantom Cricket Pixie Knight Scanner Watapon Magical Merchant Milus Radiant Meteor Dragon Spells Ritual of Destruction Ritual of Grace The Beginning of the End Emblem of the Awakening Synthesis Spell Doriados Blessing Chaos End White Dragon Ritual Buster Rancher The Puppet Magic of Dark Ruler Gravedigger Ghoul Traps Painful Escape High Tide on Fire Island Kickfire Treaty on Uniform Nomenclature A Major Upset Bamboo Scrap Fuh-Rin-Ka-Zan Ray of Hope Altar for Tribute Soul Demolition Flame of the Tyrant set is a minibox meaning that it has less cards than the normal boxes like The Ultimate Rising and Neo-Impact

If youre running an Equipment or Voltron deck, which of these are you picking up
10 Savra, Queen of the Golgari First up, weve got a classic commander for those keen on killing off their own Creatures with Savra, Queen of the Golgari
Comeuppance Comeuppance might be the funniest card you can resolve in Commander