From Ground: First, water devil's-backbone 'Variegata' thoroughly a day before attempting to transplant, to ensure the soil is moist. Use a shovel or spade to gently dig around the plant, starting a fair distance away to avoid cutting through root systems. Angle the tool away from the center of the plant to create a trench around it, then gradually deepen the trench and undercut the root ball. When enough soil has been removed, carefully lift devil's-backbone 'Variegata' out of the ground with minimal disturbance to the roots.
From Pot: Water devil's-backbone 'Variegata' adequately before starting the transplant to make soil removal easier. Place your hand on the soil surface with the plant stem between your fingers. Turn the pot upside down and gently tap the bottom until devil's-backbone 'Variegata' slides out. If the plant doesn't come out easily, you may need to run a knife or spade around the inside edge of the pot.
From Seedling Tray: Moisten the soil to make removal easier. Carefully loosen the soil around the seedling using a small tool or your fingers. Gently lift the seedling by the leaves rather than the stem to avoid damage, ensuring you bring as much of the root system as possible.