Metabolic Boost

Play this enchantment only if you control an artifact named Spawning Pool that is not enchanted and does not have any counters on it.

Cast this enchantment face-down targetting an artifact you control named Spawning Pool.

Remove two Research counters from Spawning Pool: Turn this enchantment face-up. You gain an emblem that says "Zerglings you control have haste." Then exile this enchantment.