Budget Alternatives to Myr Superion

Security Rhox $0.05 2RG · Rhino Warrior You may pay {R}{G} rather than pay this spell's mana cost. Kaleidoscorch $0.10 1R · Sorcery Converge — Kaleidoscorch deals X damage to any target, where X is the number of colors of mana sp... Improvised Club $0.11 1R · Instant As an additional cost to cast this spell, sacrifice an artifact or creature. Caustic Exhale $0.12 B · Instant As an additional cost to cast this spell, behold a Dragon or pay {1}. Imperiosaur $0.13 2GG · Dinosaur Spend only mana produced by basic lands to cast this spell. Undergrowth $0.14 G · Instant As an additional cost to cast this spell, you may pay {2}{R}. Corpse Cobble $0.16 UB · Instant As an additional cost to cast this spell, sacrifice any number of creatures. Infernal Harvest $0.16 1B · Sorcery As an additional cost to cast this spell, return X Swamps you control to their owner's hand. Laughing Mad $0.17 2R · Instant As an additional cost to cast this spell, discard a card. Soulbright Seeker $0.19 R · Elemental Sorcerer As an additional cost to cast this spell, behold an Elemental or pay {2}. Skulltap $0.19 1B · Sorcery As an additional cost to cast this spell, sacrifice a creature. Jeskai Baller $0.22 2W · Human Athlete When you cast this spell, create a 1/1 white Athlete creature token. March of Reckless Joy $0.24 XR · Instant As an additional cost to cast this spell, you may exile any number of red cards from your hand. Tend the Pests $0.26 BG · Instant As an additional cost to cast this spell, sacrifice a creature. Kyren Legate $0.26 1R · Goblin If an opponent controls a Plains and you control a Mountain, you may cast this spell without payi... Foggy Swamp Visions $0.33 1BB · Sorcery As an additional cost to cast this spell, waterbend {X}. Duty Beyond Death $0.33 1W · Instant As an additional cost to cast this spell, sacrifice a creature. March of Swirling Mist $1.26 XU · Instant As an additional cost to cast this spell, you may exile any number of blue cards from your hand.