Budget Alternatives to Great Defender

Erratic Mutation $0.03 2U · Instant Choose target creature. Induce Despair $0.06 2B · Instant As an additional cost to cast this spell, reveal a creature card from your hand. Armored Armadillo $0.06 W · Armadillo Ward {1} Flunk $0.07 1B · Instant Target creature gets -X/-X until end of turn, where X is 7 minus the number of cards in that crea... Onward // Victory $0.09 2R // 2W · Instant // Sorcery Target creature gets +X/+0 until end of turn, where X is its power. Accelerated Mutation $0.11 3GG · Instant Target creature gets +X/+X until end of turn, where X is the greatest mana value among permanents... Growth Spurt $0.12 1G · Instant Roll a six-sided die. Necrotic Wound $0.15 B · Instant Undergrowth — Target creature gets -X/-X until end of turn, where X is the number of creature car... Kitsune Loreweaver $0.16 1W · Fox Cleric {1}{W}: This creature gets +0/+X until end of turn, where X is the number of cards in your hand. Auriok Bladewarden $0.16 1W · Human Soldier {T}: Target creature gets +X/+X until end of turn, where X is this creature's power. Oaken Power Suit $0.17 Contraption Whenever you crank this Contraption, target creature gets +X/+X until end of turn, where X is the... Stalactite Stalker $0.18 B · Goblin Rogue Menace Boon of Boseiju $0.19 1G · Instant Target creature gets +X/+X until end of turn, where X is the greatest mana value among permanents... Rush of Blood $0.21 2R · Instant Target creature gets +X/+0 until end of turn, where X is its power. Frontline Rush $0.22 RW · Instant Choose one — Hydra Trainer $0.23 1G · Human Warrior You may exert this creature as it attacks. Basilisk Gate $0.34 Gate {T}: Add {C}. Wine of Blood and Iron $0.42 3 · Artifact {4}: Target creature gets +X/+0 until end of turn, where X is its power. Subdue $0.44 G · Instant Prevent all combat damage that would be dealt by target creature this turn. Kry Shield $1.86 2 · Artifact {2}, {T}: Prevent all damage that would be dealt this turn by target creature you control.