Jacob was now in a valley that was filled with tons of volcanos

Jacob: yep, entei would definitely be here

Jaraja: I sense him around here, I think he would be on that volcano

Jacob looked and saw the valley's biggest and tallest volcano

Jacob: alright, lets go

Timeskip

Jacob was now at the top of the volcano, where he saw entei standing on a rock pillar

Entei: male

Jacob: yo, entei

Entei turned around and saw jacob

Entei: jacob, what are you doing here?

Jacob: I came for you, see you found yourself a nice relaxing place

Entei: yeah, plus I won't have to worry about people bothering me cause all the volcanos here are active, you would have to be an idiot to came here

Jacob: so does that make me an idiot for coming here

Entei: what! no of course your different, so umm what do you want with me

Jacob: well arceus sent me on a quest to catch the legendary and mythical pokemon here, I already caught raikou and your next

Entei: I see, so I'm guess that you want to battle me like old times

Jacob: yep, you know it's funny, our fights always took placed in a volcano and here we are once again, in a volcano

Entei: yep, so, wanna begin

Jacob: you betcha, it's fighting time

[There should be a GIF or video here. Update the app now to see it.]

The battle began, both jacob were staring at each other from a distance

Entei: let's start

Entei launched a flamethrower at jacob

Jacob: hydro pump

Jacob countered the flamethrower with hydro pump

Entei: take this

Entei began to use flare blitz, he. As he charged towards jacob, he left behind a trail of orange fire. The fire then reached Entei and circles around his body until it completely covered his body like a fiery aura

Jacob: aqua jet

Jacob's body became surrounded by water as he shot himself like a rocket at entei, the two of the slammed into each other as they tried to overpowered the other

Jacob: you've gotten stronger entei

Entei: I know, I've been training myself since we last fought

Jacob: impressive, but I've trained myself as well

Jacob then overpowered entei and slammed into his stomach, entei was sent crashing into one of the volcano's walls, the then got back up

Entei: impressive, but I'm not down yet, let me show how hard I worked

Entei launched a massive stream of lava from his mouth, jacob guarded himself at the attack hit him, the attack slowly began to push jacob into the center of the volcano

Entei: now I got you

Entei let out a massive roar that cause the ground the shake, suddenly multiple lava geyser came out of the ground, jacob was caught in the middle of one of them

Jacob: (screaming) RAHHHHHHH

Entei: haha looks like I win this time

Jacob: I don't this so, flash fire activate

Jacob them aborb the entire lave geyser which shocked entei

Entei: what!

Jacob: it's time to put this fire out, rain dance

A bunch of dark clouds appear in the sky as it then started to rain heavily, the water began to cooldown the lava

Jacob: time to finish this

Jacob: Origin Pulse!

multiple blue orbs began to appear around jacob, the orbs then fired a beam of blue energy at entei

Entei: I'm not going down yet!

Entei released a massive roar that cause the entire volcano to erupt, the origin pulse and the lava geyser clashed together, both attacks were struggling to overpower the other

Jacob: it's...time...to..end...this!

The origin pulse's power drastically increased which overpowered the geyser and hit entei

Entei:(screaming) RAAAAHHHHHHH

The attack blew up the entire volcano and created a massive crater, jacob got back to the ground and say entei in the middle of the crater in a weaken state, jacob walked up to him and healed him, entei slowly got up and stared at jacob, he then suddenly puked out a stream of water from his mouth like this

(Pretend it was water)

He then stopped a coughed a bit

Entei:(cough) I...have never drank...so much water....in my entire life

Jacob: yeah sorry about that

Entei: it's okay, I guess this means that you win

Jacob: yep, welcome to the team entei

Entei: alright, so I guess this mean that suicune is next

Jacob: yep, do you know where he is?

Entei: not really, he's probably looking for some lakes that he can purify

Jacob: probably, thanks for telling me

Jacob then caught entei

Jaraja: uhh jacob, what are we gonna do about this crater

Jacob: uhhhh, if anyone asks, we'll just say it was there when we got here, now lets go

Jeacob then left and began to search of suicune