Budget Alternatives to Solve the Equation

Frostpyre Arcanist $0.04 4U · Giant Wizard This spell costs {1} less to cast if you control a Giant or a Wizard. Skittering Surveyor $0.05 3 · Construct When this creature enters, you may search your library for a basic land card, reveal it, put it i... Marshals' Pathcruiser $0.06 3 · Vehicle When this Vehicle enters, search your library for a basic land card, reveal it, put it into your ... Sultai Monument $0.07 2 · Artifact When this artifact enters, search your library for a basic Swamp, Forest, or Island card, reveal ... Jeskai Monument $0.10 2 · Artifact When this artifact enters, search your library for a basic Island, Mountain, or Plains card, reve... Mystical Teachings $0.12 3U · Instant Search your library for an instant card or a card with flash, reveal it, put it into your hand, t... Micromancer $0.15 3U · Human Wizard When this creature enters, you may search your library for an instant or sorcery card with mana v... Sun-Spider, Nimble Webber $0.17 3W/U · Spider Human Hero During your turn, Sun-Spider has flying. Trail of Mystery $0.18 1G · Enchantment Whenever a face-down creature you control enters, you may search your library for a basic land ca... Disciple of Deceit $0.23 UB · Human Rogue Inspired — Whenever this creature becomes untapped, you may discard a nonland card. Spirit of the Aldergard $0.23 3G · Bear Spirit When this creature enters, search your library for a snow land card, reveal it, put it into your ... Deadeye Quartermaster $0.34 3U · Human Pirate When this creature enters, you may search your library for an Equipment or Vehicle card, reveal i... Goblin Tutor $0.58 R · Instant Roll a six-sided die. Invasion of Theros // Ephara, Ever-Sheltering $0.71 Siege // Legendary Enchantment Creature — God When this Siege enters, search your library for an Aura, God, or Demigod card, reveal it, put it ... Waterlogged Teachings // Inundated Archive $0.76 Instant // Land Search your library for an instant card or a card with flash, reveal it, put it into your hand, t... The Seriema $0.82 1WW · Spacecraft When The Seriema enters, search your library for a legendary creature card, reveal it, put it int...