Mana Crypt taps for 2, and Mana Vault, Thran Dynamo, Basalt Monolith, and Grim Monolith can tap for three easily enough and make even more mana than 5
Time Walk Time Walk, a time-manipulating sorcery card, is a testament to the power and rarity of early MTG sets
Having a powerful enters-the-battlefield triggers works wonders in number shells, including Flicker and Momentary Blink effects
Creature 4Heartfire Hero 4Slickshot Show-Off 4Emberheart Challenger 4Optimistic Scavenger 4Monastery Swiftspear Instant 4Monstrous Rage 1Loran's Escape Land 3Plains 4Battlefield Forge 2Restless Bivouac 1Rockface Village 4Mountain 1Thran Portal 4Inspiring Vantage Enchantment 3Hammerhand 4Ethereal Armor 4Sheltered by Ghosts 4Shardmage's Rescue Sideboard 2Torch the Tower 1Surge of Salvation 1Lightning Helix 3Get Lost 1Destroy Evil 3Urabrask's Forge Sheltered by Ghosts is one hell of a Magic card

Heres an example of the kind of deck that got Mind Twist banned: Creatures (2) Lands (21) Spells (37) 4 Mana Drain 2 Counterspell 4 Swords to Plowshares 1 Sol Ring 1 Regrowth 1 Mind Twist 1 Demonic Tutor 1 Braingeyser 1 Time Walk 1 Ancestral Recall 2 Red Elemental Blast 1 Jayemdae Tome 2 Disrupting Scepter 4 Disenchant 1 Recall 2 Moat 1 Mirror Universe 1 Timetwister 1 Black Lotus 1 Mox Emerald 1 Mox Jet 1 Mox Pearl 1 Mox Ruby 1 Mox Sapphire Thats right, one of the most famous, most influential decks of all-time, The Deck, was a Mind Twist deck until Mind Twist was banned
Secret Lair x FINAL FANTASY: Grimoire Secret Lair Speaking of locks, you could offer me just about any drop with five of six cards being in the EDHREC six digits and Id be interested, sight unseen