This can happen through mechanics like delve and forage, exile effects, reanimation effects that return cards to the battlefield, or recursion effects that return cards to your hand
These text versions of symbols help find particular mana costs, abilities, and more
#86 Caravan Escort / Halimar Wavewatch / Zulaport Enforcer (Rise of the Eldrazi) Why are they bad

Table of Contents show The Deck Command Tower | Illustration by Evan Shipard Commander (1) Planeswalker (2) Ob Nixilis, the Hate-Twisted Sorin Markov Creature (24) Defiler of Flesh Elder Brain Seizan, Perverter of Truth Fate Unraveler Master of the Feast Vito, Thorn of the Dusk Rose Rankle, Master of Pranks Psychosis Crawler Gray Merchant of Asphodel Vilis, Broker of Blood Marauding Blight-Priest Erebos, God of the Dead Crypt Ghast K'rrik, Son of Yawgmoth Solemn Simulacrum Witch of the Moors Bloodgift Demon Opposition Agent Epicure of Blood Murderous Rider Massacre Wurm Plaguecrafter Phyrexian Obliterator Twilight Prophet Instant (7) Baleful Mastery Dark Ritual Blood Pact Defile Deadly Rollick Hero's Downfall Soul Shatter Sorcery (11) Eldritch Pact Atrocious Experiment Peer into the Abyss Dark Deal Damnable Pact Sign in Blood Feed the Swarm Toxic Deluge Exsanguinate Torment of Hailfire Deadly Tempest Enchantment (6) Black Market Connections Underworld Dreams Phyrexian Arena Sanguine Bond Exquisite Blood Lich's Mastery Artifact (13) Howling Mine Teferi's Puzzle Box Thought Vessel Decanter of Endless Water Font of Mythos Temple Bell Lightning Greaves Swiftfoot Boots Arcane Signet Bolas's Citadel Aetherflux Reservoir Well of Lost Dreams Sol Ring Land (36) Reliquary Tower Cabal Coffers Geier Reach Sanitarium Mikokoro, Center of the Sea Castle Locthwain Swamp x31 Because Sheoldred, the Apocalypses abilities care about drawing cards, this deck is built to cash in on the benefits your commander gives you and to increase its damage output

It's pretty strong at shutting stuff down, and with it untapped and five mana available, no one will swing your way with their grounded team when they could attack another
Belle's incredible stats, coupled with her "Salvage" and "Repurpose" abilities also make it easier to gain Lore and play her card (since her standard Ink Cost is a 9)