el aprendiz de cowl crea un campo de fuerza

Vitto lifted his voice in a sudden, thunderous roar, and I could sense the will
and the power that underlay his call. "MASTER!"
Ramirez was a beat slow in transferring his sword to his other hand so that
he could fling green fire at Vitto, and the vampire lowered his arms and
crossed them in front of him, hissing words in some strange tongue as he
did. Ramirez's strike shattered upon that defense, though bits of greenish
fire dribbled onto Vitto's arms, each of them chewing out a scoop of flesh as
far across as a nickel.