What is the best though
Like some of the previously mentioned cards on this list, Brainstorm doesnt even increase your hand size
It's very strong for Commander play in decks with extra mana sitting around like mana rocks and dorks and lands
Abigale, Eloquent First-Year Alms Beast Arvad the Cursed Astarion, the Decadent Baron Bertram Graywater Bleeding Effect Blood Baron of Vizkopa Blood-Cursed Knight Breathless Knight Call to the Feast Cloak and Dagger, Entwined Colonel Autumn Divinity of Pride Edgar Markov's Coffin Elenda, Saint of Dusk Elenda, the Dusk Rose Firja, Judge of Valor Gift of Orzhova Glasswing Grace Indulging Patrician Ketramose, the New Dawn Killian, Ink Duelist Kunoros, Hound of Athreos Liesa, Forgotten Archangel Liesa, Shroud of Dusk Lurrus of the Dream-Den Markov Purifier Mister Negative Necromancer's Covenant Nip Gwyllion Ondu Knotmaster Ondu Knotmaster Orah, Skyclave Hierophant Order of Sacred Dusk Prideful Feastling Ready // Willing Reaping Willow Resolute Rider Sanguine Savior Silverquill Pledgemage Sorin, Grim Nemesis Sorin, Lord of Innistrad Sorin, Ravenous Neonate Sorin, Solemn Visitor Sorin, Vengeful Bloodlord Syr Vondam, the Lucent Teysa Karlov The Broken Sky Tithe Drinker Tymna the Weaver Tymna the Weaver Unraveling Mummy Verrak, Warped Sengir Vish Kal, Blood Arbiter Vizkopa Guildmage Vizkopa Vampire Vona, Butcher of Magan Voracious Hatchling Wispdrinker Vampire Withar, Cocoon Keeper
Or perhaps the far more expensive Foundations Jumpstart anime printing
For the sake of variety, its nice to know you can build a deck specifically for multiplayer
