Cheapest priced copy (Commander 2020): $0.69 at Card Kingdom, near mint, their price list as of .
Mulldrifter 
Creature — Elemental · 2/2 · Common · Lorwyn · #76
Flying
When this creature enters, draw two cards.
Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
29 printings · $0.69 to $29.99 at Card Kingdom
2 rulings from Wizards of the Coast
- 19 March 2021To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as an evoke cost), add any cost increases, then apply any cost reductions. The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.
- 19 March 2021If you pay the evoke cost, you can have Mulldrifter's own triggered ability resolve before the evoke triggered ability. You can cast spells after that ability resolves but before you have to sacrifice Mulldrifter.