Budget Alternatives to Corrosive Mentor

Glade Watcher $0.05 1G · Elemental Defender Maze Sentinel $0.05 5W · Elemental Vigilance Maze Abomination $0.07 5B · Elemental Deathtouch Maze Behemoth $0.08 5G · Elemental Trample Maze Rusher $0.08 5R · Elemental Haste Crater Elemental $0.15 2R · Elemental {R}, {T}, Sacrifice this creature: It deals 4 damage to target creature. Felhide Petrifier $0.16 2B · Minotaur Warrior Deathtouch Embodiment of Fury $0.19 3R · Elemental Trample Roshan, Hidden Magister $0.22 3B · Human Assassin Other creatures you control are Assassins in addition to their other types. Embodiment of Insight $0.26 4G · Elemental Vigilance Paragon of Open Graves $0.30 3B · Skeleton Warrior Other black creatures you control get +1/+1. Zagras, Thief of Heartbeats $0.33 4BR · Vampire Rogue This spell costs {1} less to cast for each creature in your party. Maelstrom Wanderer $0.36 5GUR · Elemental Creatures you control have haste. Ashenmoor Liege $0.46 1B/RB/RB/R · Elemental Knight Other black creatures you control get +1/+1. Dread Charge $0.74 3B · Sorcery Black creatures you control can't be blocked this turn except by black creatures. Massacre Girl, Known Killer $1.11 2BB · Human Assassin Menace Righteous War $1.71 1WB · Enchantment White creatures you control have protection from black.