Budget Alternatives to Wall of Shards

Geist of the Lonely Vigil $0.05 1W · Spirit Cleric Defender, flying Wall of One Thousand Cuts $0.08 3WW · Wall Defender, flying Fiery Justice $0.09 RGW · Sorcery Fiery Justice deals 5 damage divided as you choose among any number of targets. Roar of Jukai $0.10 2G · Arcane If you control a Forest, each blocked creature gets +2/+2 until end of turn. Armistice $0.11 2W · Enchantment {3}{W}{W}: You draw a card and target opponent gains 3 life. Wall of Swords $0.11 3W · Wall Defender Wall of Resistance $0.13 1W · Wall Defender Fog Bank $0.16 1U · Wall Defender Stoic Ephemera $0.17 2W · Spirit Defender Angelic Wall $0.19 1W · Wall Defender Orator of Ojutai $0.21 1W · Bird Monk As an additional cost to cast this spell, you may reveal a Dragon card from your hand. Ageless Sentinels $0.22 3W · Wall Defender Sunweb $0.32 3W · Wall Defender Wall of Air $0.32 1UU · Wall Defender, flying Wall of Reverence $0.34 3W · Spirit Wall Defender, flying Wall of Denial $0.42 1WU · Wall Defender, flying Hover Barrier $0.44 2U · Illusion Wall Defender, flying Mindbender Spores $1.20 2G · Fungus Wall Defender