Aether Refinery - Commander: Modern Horizons 3 (Rare) [M3C-106]

Aether Refinery doubles the energy counters you generate, making it a strong choice for energy-based strategies. By tapping it, you can convert your energy into Aetherborn creature tokens, allowing you to build up a board presence quickly. However, it requires a significant mana investment and is best suited for decks that can consistently produce energy.