Adam Warlock possesses the Soul Gem, which adheres to his forehead. Its precise origin unknown, the soul-gem is one of six of its kind. The soul-gem enables Warlock to:
Warlock formerly possessed the Soul Gem, one of the legendary Infinity Gems. This Gem allowed Warlock to drain and control the life essences (Or Spirits) of living (or dead) organisms. This gem possessed a consciousness of its own, and displayed a vampiric hunger for the life-essences of living beings. Ironically, the gem is a gateway into a pocket-universe, containing an idyllic, pastoral world where the souls of the beings upon which the gem has fed live in peace. Warlock was so accomplished at the gem's use, that he could use its energies to project energy blasts, protective shields, and blasts of mystic energies capable of disrupting the karmic centers of living beings.
Warlock has also employed a "Karmic Staff" in the past. This staff was said to be an extension of Warlock's own life-essence, and its properties made it seemingly unbreakable. Warlock could also focus mystic energies through his staff with greater accuracy than he could by other means.