Key Mace + Tentacle Plant → Queen of Autumn Leaves

Key Mace + Morphing Jar → Mystical Sand

Key Mace + Muse-A → Dark Witch

Key Mace + Pale Beast → Nekogal #2

Key Mace + Little Chimera → Nekogal #2

Key Mace + Key Mace #2 → Dark Witch

Key Mace + Tenderness → Dark Witch

Key Mace + Obese Marmot of Nefariousness → Nekogal #2

Key Mace + Shining Friendship → Dark Witch

Key Mace + Lady of Faith → Dark Witch

Key Mace + Hourglass of Courage → Dark Witch

Key Mace + Snakeyashi → Queen of Autumn Leaves