"At the start of the next turn." Vivian said, "The Phantom Spirit Dragon Chaos Body will recover its previous Spirit Value and enter a berserk state. It cannot be destroyed by battle because any damage caused by battle will be suffered by the opponent, and the damage it deals in battle is doubled. Also, during my battle phase, you cannot activate card effects."
The strength of the Phantom Spirit Dragon Chaos Body lies in its berserk state, but its weakness is also there.
Vivian must find a way to keep it alive until the start of her next turn. Although the Chaos Body has some resistance, having zero Spirit Value and no resistance to battle damage is its biggest weakness. The opponent can completely destroy it through battle.
The Spirit-Devouring Storm will dissipate at the start of Vivian's next turn.
