Those include cards featuring Prepared spells, which feel like a greatest hits of spells from Magics long and storied past, like Ancestral Recall or Demonic Tutor, a series of new Elder Dragons, and the awesome new Emeritus cycle
The conversation shifts, however, if youre able to repeatedly utilize theft effects, like combining Deadeye Navigator with infinite blue mana

Check out this list: Heavy Metal Thraximundar | Commander | Kendra Smith Commander (1) 1 Thraximundar Creatures (28) 1 Bloodghast 1 Butcher of Malakir 1 Carrion Feeder 1 Cemetery Reaper 1 Consecrated Sphinx 1 Death Baron 1 Endrek Sahr, Master Breeder 1 Fleshbag Marauder 1 Geth, Lord of the Vault 1 Glen Elendra Archmage 1 Grave Titan 1 Hell's Caretaker 1 It That Betrays 1 Lich Lord of Unx 1 Lord of the Undead 1 Mulldrifter 1 Nether Traitor 1 Nightscape Battlemage 1 Oona, Queen of the Fae 1 Pawn of Ulamog 1 Phyrexian Obliterator 1 Rakka Mar 1 Reassembling Skeleton 1 Sheoldred, Whispering One 1 Solemn Simulacrum 1 Undead Warchief 1 Venser, Shaper Savant 1 Viscera Seer Planeswalkers (3) 1 Karn Liberated 1 Liliana Vess 1 Nicol Bolas, Planeswalker Instants (4) 1 Brainstorm 1 Counterspell 1 Crosis's Charm 1 Terminate Sorceries (11) 1 Ancestral Vision 1 Barter in Blood 1 Beacon of Unrest 1 Cruel Ultimatum 1 Demonic Tutor 1 Diabolic Intent 1 Dread Return 1 Innocent Blood 1 Ponder 1 Reanimate 1 Victimize Enchantments (8) 1 Attrition 1 Bitterblossom 1 Call to the Grave 1 Goblin Assault 1 Goblin Bombardment 1 Grave Pact 1 Necromancy 1 Phyrexian Reclamation Artifacts (9) 1 Ashnod's Altar 1 Dimir Signet 1 Fellwar Stone 1 Mimic Vat 1 Phyrexian Altar 1 Rakdos Signet 1 Sol Ring 1 Unscythe, Killer of Kings 1 Whispersilk Cloak Lands (36) 3 Island 3 Mountain 3 Swamp 1 Ancient Tomb 1 Blood Crypt 1 Bloodstained Mire 1 Bojuka Bog 1 Cascade Bluffs 1 City of Brass 1 Creeping Tar Pit 1 Crumbling Necropolis 1 Dragonskull Summit 1 Drowned Catacomb 1 Forbidden Orchard 1 Graven Cairns 1 Kher Keep 1 Miren, the Moaning Well 1 Phyrexian Tower 1 Polluted Delta 1 Reflecting Pool 1 Scalding Tarn 1 Shivan Reef 1 Steam Vents 1 Strip Mine 1 Sulfurous Springs 1 Sunken Ruins 1 Underground River 1 Unholy Grotto 1 Urborg, Tomb of Yawgmoth 1 Watery Grave At first, I was kind of at a loss for what to do with this list

If you want the simplest place to start, build around Elder Deep-Fiend for tempo or Herigast for Commander
You can cast it from exile no matter what # you get, and then you can either spend mana to cast it with mana of any color usable and then you can get it for free with the higher roll