Budget Alternatives to Dark Sphere

Sanctum Guardian $0.05 1WW · Human Cleric Sacrifice this creature: The next time a source of your choice would deal damage to any target th... Pilgrim of Virtue $0.08 2W · Human Cleric Protection from black Rhystic Circle $0.12 2WW · Enchantment {1}: Any player may pay {1}. Circle of Protection: White $0.13 1W · Enchantment {1}: The next time a white source of your choice would deal damage to you this turn, prevent that... Prismatic Circle $0.13 2W · Enchantment Cumulative upkeep {1} Seasoned Tactician $0.16 2W · Human Advisor {3}, Exile the top four cards of your library: The next time a source of your choice would deal d... Kithkin Armor $0.17 W · Aura Enchant creature New Way Forward $0.22 2URW · Instant The next time a source of your choice would deal damage to you this turn, prevent that damage. Haazda Shield Mate $0.23 2W · Human Soldier At the beginning of your upkeep, sacrifice this creature unless you pay {W}{W}. Invulnerability $0.24 1W · Instant Buyback {3} Cho-Arrim Alchemist $0.45 W · Human Spellshaper {1}{W}{W}, {T}, Discard a card: The next time a source of your choice would deal damage to you th... Righteous Aura $0.55 1W · Enchantment {W}, Pay 2 life: The next time a source of your choice would deal damage to you this turn, preven... Reverse Damage $0.70 1WW · Instant The next time a source of your choice would deal damage to you this turn, prevent that damage. Bone Mask $0.85 4 · Artifact {2}, {T}: The next time a source of your choice would deal damage to you this turn, prevent that ... Story Circle $0.89 1WW · Enchantment As this enchantment enters, choose a color. General's Regalia $1.37 3 · Artifact {3}: The next time a source of your choice would deal damage to you this turn, that damage is dea...