Lava Spit (唾液溶岩 Daeki Yōgan) is a technique used by Auta Magetta.
Magetta possesses powerful magma within his body, which he can spit out in streams. He can also increase the power of the attack by cooling and solidifying the magma.
Magetta uses this technique to counter Vegeta's Lucora Gun, eventually forcing him on the run. Beerus initially believes it to be an artificial weapon and objects, but the Referee quickly receives confirmation that the Lava Spit is a natural ability of Magetta's.