Budget Alternatives to Herald of War

Goblin Maskmaker $0.08 R · Goblin Citizen Whenever this creature attacks, face-down spells you cast this turn cost {1} less to cast. Spellbinding Soprano $0.16 1R · Human Bard Whenever this creature attacks, instant and sorcery spells you cast this turn cost {1} less to cast. Golden-Tail Trainer $0.18 1GW · Fox Samurai Aura and Equipment spells you cast cost {X} less to cast, where X is this creature's power. Vadrik, Astral Archmage $0.27 1UR · Human Wizard If it's neither day nor night, it becomes day as Vadrik enters. The Kenriths' Royal Funeral $0.29 2WB · Legendary Enchantment When The Kenriths' Royal Funeral enters, exile up to two target legendary creature cards from you... Hinata, Dawn-Crowned $0.31 1URW · Kirin Spirit Flying, trample Starfield Mystic $0.34 1W · Human Cleric Enchantment spells you cast cost {1} less to cast. Hamza, Guardian of Arashin $0.34 4GW · Elephant Warrior This spell costs {1} less to cast for each creature you control with a +1/+1 counter on it. Font of Magic $0.38 3U · Enchantment Instant and sorcery spells you cast cost {1} less to cast for each time you've cast a commander f... Mizzix of the Izmagnus $0.52 2UR · Goblin Wizard Whenever you cast an instant or sorcery spell with mana value greater than the number of experien... Demilich $0.64 UUUU · Skeleton Wizard This spell costs {U} less to cast for each instant and sorcery spell you've cast this turn. Rakdos, Lord of Riots $0.86 BBRR · Demon You can't cast Rakdos unless an opponent lost life this turn. Hero of Iroas $1.04 1W · Human Soldier Aura spells you cast cost {1} less to cast. Mindsplice Apparatus $1.09 3U · Artifact Flash Sokka, Swordmaster $1.50 2W · Human Warrior Ally Vigilance Temur Battlecrier $1.86 GUR · Orc Ranger During your turn, spells you cast cost {1} less to cast for each creature you control with power ...