The Sage Art: Lava Release Rasengan is a powerful, spherical energy construct with a dynamic, swirling lava-like texture. Its core glows intensely with a bright orange hue, surrounded by swirling patterns of molten rock that emit heat distortion effects. The Rasengan's surface is rough and uneven, mimicking the appearance of flowing lava, with occasional sparks and embers flying off. The overall shape is spherical but slightly irregular, emphasizing its raw, untamed energy. The animation includes a constant rotation and pulsation, enhancing its menacing presence.