Budget Alternatives to Mold Demon

Balduvian Horde $0.03 2RR · Human Barbarian When this creature enters, sacrifice it unless you discard a card at random. Drekavac $0.08 1B · Beast When this creature enters, sacrifice it unless you discard a noncreature card. Ovinomancer $0.10 2U · Human Wizard When this creature enters, sacrifice it unless you return three basic lands you control to their ... Scythe Tiger $0.12 G · Cat Shroud Hidden Horror $0.12 1BB · Horror When this creature enters, sacrifice it unless you discard a creature card. Drake Familiar $0.13 1U · Drake Flying Vulshok War Boar $0.14 2RR · Boar Beast When this creature enters, sacrifice it unless you sacrifice an artifact. Rogue Elephant $0.16 G · Elephant When this creature enters, sacrifice it unless you sacrifice a Forest. Bull Elephant $0.16 3G · Elephant When this creature enters, sacrifice it unless you return two Forests you control to their owner'... Primeval Force $0.24 2GGG · Elemental When this creature enters, sacrifice it unless you sacrifice three Forests. Fallow Wurm $0.26 2G · Wurm When this creature enters, sacrifice it unless you discard a land card. Plant Elemental $0.29 1G · Plant Elemental When this creature enters, sacrifice it unless you sacrifice a Forest. Quickling $0.31 1U · Faerie Rogue Flash Avatar of Discord $0.35 B/RB/RB/R · Avatar Flying Jokulmorder $0.39 4UUU · Leviathan Trample Megatherium $0.43 2G · Beast Trample Glint Hawk $0.76 W · Bird Flying Thundering Wurm $1.78 2G · Wurm When this creature enters, sacrifice it unless you discard a land card.