Estios barreled through the doorway, only to be flung immediately back. Sam skidded to a halt and shifted to his astral senses. A glow lit the doorway, a magical barrier. Estios picked himself up, his own aura flaring as he did. Sam watched the color shift toward the hue of the barrier as Estios attuned himself to its psychic frequency. The tall elf leaned grimly on the luminescent wall until the tones matched and he passed through.