Golgari Keyrune⁣ - Return to Ravnica⁣ (Uncommon)⁣ [229]

Golgari Keyrune provides flexible mana options, adding either black or green when tapped. For an additional cost, it can become a 2/2 Insect creature with deathtouch, allowing for both mana ramp and a potential blocker or attacker. This card fits well in Golgari-themed decks that value resource generation and creature utility.