Jaune was uncertain, to put it lightly. Maul had taken control of his body, and brutally beaten winter in a fight. Jaune himself would have used more force powers, and less brutal lightsaber swings. Maul on the other hand, swung furiously and quickly, taking out winter slowly and painfully. And ending it with a stab into her leg, most likely putting her into a wheelchair for at least a month. But maul had a clear plan, and the others even agreed with him! Maul wanted to perform a ritual, to see part of the future. To prevent anything that would not be, beneficial to them. But of course, just maul was not  strong enough to do it, but with the power of the others, they had plenty.

At beacon

Winter Schnee is seen being weeled out of the infirmary, and is met with a worried Weiss, her and Team JNPR trailing behind her.
Weiss: winter! What happened?
Winter: your friend, that arc boy.
Weiss: he did this? How?
Winter: he's stronger then you know. But as soon as I insulted him, it was like he changed. His eyes began to glow orange, and his legs!
Weiss: legs?
Winter: your friend doesn't have legs.....
tris hits the group like a truck, well the people who cared about him. Blake, ruby and JNPR are almost in tears. Jaune had lost is hand, now his legs? But Weiss and yang were still furious.
Weiss: where  is he?
Winter: he ran to the forest.
Weiss runs off into the emerald forest, the teams following her.

With Jaune.

Jaune Laid in a circle of spices and herbs.  
Maul: reach out in the force. And the ritual will begin.
Jaune did as he was told. And as he reached out, he was hit by the vision.

An army of Grimm are surging into vale. Beacon is up in flames. A dead robot girl is laying in an arena. A women with dark hair and flaming eyes fires an arrow into Pyyhra heart.
NO
Shade is in flames like beacon. A black haired and red eyed women is fighting the flame women from before. His team and team rwby are fighting as well. Against a scorpion faunes, a large man with lighting dust all around him, and 2 teens with grey and green hair. The Villains retreat and the heroes claim victory.
But a women with pale skin  and red eyes becons a Grimm forward. And gets on, flying off.

Atlas is in flames, Like the other 2 kingdoms. But the villains again lose. But in the grimmlands, Jaune steps forward and bows before Salem, the Grimm Queen. Who smiles
NEVER
Times seems to fly backwards. As he sees Salem begging to the gods. And being cursed, he sees ozpins rebirths. And he finally sees Salem become the Grimm queen.

But the vision doesn't end there, no he is brought to space. Beyond remnant. He sees the sith empire, the fall of the old republic. The clone wars, the galactic civle war, he sees the deaths of the Jedi and sith who inhabit his body. He sees the destruction of alderman, and the core systems. And he sees the 3 harsh eye colors of his new enimies. Blaze, Kanto, and razor. Watching him.

The vision ends, with a pulse of power, going through the forest, shaking the trees.

With the group

They see the trees swing in the sudden wind, and the origin of the pulse.
Weiss: he's there!
Ruby: weiss please! Can't you see this storm!?
It was true, Weiss hates to admit it. The bright blue was now a uncomfortable grey. And it was raining, with wind. Even in the rain was light. But arc would pay! They walked into a clearing, where Jaune was sitting there, head in hands.
Weiss: dunce! What are you doing here? It doesn't matter! I'm here for revenge for my sister.
Jaune looks at Weiss, with bloodshot orange eyes. He stands up and looks at them. 
Jaune: soon, remnant shall be remade.
As he said that, lighting struck behind him. And for a split second. Jaune is replaced by a man with red and black skin, with horns. But he vanishes as soon as he came.
Jaune: , the huntsman  will die. The kingdoms will no longer be the ruling power in this world.
Pyhrra: Jaune? What are you talking about?
Jaune: soon, they will take over. Soon, this pitiful war will be over. Soon, the person pulling the strings will reveal themselves. Soon, it will be all over.
There is a gasp, and a dropping of a mug. The group turns around to see ironwood, goodwitch and Ozpin all starring wide eyed at Jaune.
Jaune: I know how your pitiful war will go. You will lose, I have seen It.
An igniting sound to heard. And a large man in a dark cloak with crimson eyes walks out, with 2 double Bladed  sabers.

Jaune: I wondered when you would show yourself, Razor...