Extortion (f./Dockside Extortionist from C19)Equilibrium Buy + Goblin Bully Buy
Goblin Bully is a stand-in for Dockside Extortionist (C19, Rare).
These two, along with any Zero CMC creature (as long as it has a base toughness of 1 or greater), will net infinite mana, as long as your opponents have 6 or more artifacts and enchantments between them.
This can also be done with Cloudstone Curio, but the zero CMC creature used will being restricted to Kobolds. Additionally, this can also be used in conjunction with any deck running an Aluren/Curio package.
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