Budget Alternatives to Covetous Dragon

Barbarian Outcast $0.05 1R · Human Barbarian Beast When you control no Swamps, sacrifice this creature. Emperor Crocodile $0.06 3G · Crocodile When you control no other creatures, sacrifice this creature. Illusory Demon $0.07 1UB · Demon Illusion Flying Synod Centurion $0.10 4 · Construct When you control no other artifacts, sacrifice this creature. Sparktongue Dragon $0.11 3RR · Dragon Flying Riddle Gate Gargoyle $0.15 WU · Gargoyle Flying Ronom Serpent $0.15 5U · Serpent This creature can't attack unless defending player controls a snow land. Voltstorm Angel $0.16 3WW · Angel Flying Kukemssa Serpent $0.22 3U · Serpent This creature can't attack unless defending player controls an Island. Skittering Skirge $0.27 BB · Phyrexian Imp Flying Spawn of Thraxes $0.30 5RR · Dragon Flying Pirate Ship $0.78 4U · Human Pirate This creature can't attack unless defending player controls an Island. Resplendent Marshal $1.13 1WW · Angel Warrior Flying Tethered Griffin $1.54 W · Griffin Flying