The Soul Booster is a semi-realistic fantasy item with a glowing, pulsating core encased in a metallic orb. The orb features intricate engravings that resemble arcane runes, with a color scheme of deep blues and purples that emit a faint luminous glow. The surface is smooth yet slightly textured to give it a magical, otherworldly appearance, and the core within is translucent with swirling energy visible inside.