Budget Alternatives to Endless Wurm

Wild Leotau $0.09 2GG · Cat At the beginning of your upkeep, sacrifice this creature unless you pay {G}. Kami of the Tended Garden $0.09 3G · Spirit At the beginning of your upkeep, sacrifice this creature unless you pay {G}. Lithophage $0.10 3RR · Insect At the beginning of your upkeep, sacrifice this creature unless you sacrifice a Mountain. Darba $0.12 3G · Bird Beast At the beginning of your upkeep, sacrifice this creature unless you pay {G}{G}. Anurid Scavenger $0.21 2G · Frog Beast Protection from black Apocalypse Demon $0.22 4BB · Demon Flying Daemogoth Woe-Eater $0.23 1BB/GG · Demon At the beginning of your upkeep, sacrifice a creature. Bog Elemental $0.29 3BB · Elemental Protection from white Cosmic Larva $0.29 1RR · Beast Trample Gurzigost $0.30 3GG · Beast At the beginning of your upkeep, sacrifice this creature unless you put two cards from your grave... Drought $0.30 2WW · Enchantment At the beginning of your upkeep, sacrifice this enchantment unless you pay {W}{W}. Territorial Dispute $0.43 4RR · Enchantment At the beginning of your upkeep, sacrifice this enchantment unless you sacrifice a land. Xathrid Demon $0.47 3BBB · Demon Flying, trample Devouring Strossus $0.66 5BBB · Phyrexian Horror Flying, trample Child of Gaea $1.01 3GGG · Elemental Trample