The Colosseum looks exactly as Reima remembers it, probably because it's based off of his memory... The temperature is much hotter than Kaer Morhen's almost perpetual winter and he can feel the heat warming his clothing. The sun beats down on them as if it were the real thing, lucky Nerissa is immune to sunlight or Ciri'd be holding a pile of ash right about now...
With Nerissa turning back into her vampire form Ciri walks over and asks, "What now?"
Reima grins, "It's time to train of course, I've been waiting to gain access to this room to train you without any interference."
Ciri "Training?"
Reima "Proper combat training, stuff I haven't been able to teach as the Auror's would be on our asses in minutes."
Ciri "Ok... What do you have in mind?" she asks curious.
Reima "Watch and learn." he says and imagines the room producing a couple stone training dummies, exact copies crawling out of the Colosseum floor and standing still opposite him.
Deciding to try and impress the girl he opens his hand and compresses flames into it, fire seems to pour from his bare skin and grow into a large ball of dark red fire. He continues to push more and more power into it until it's around the size of one of those Yoga Balls, after this he compresses the flame down again into the size of a tennis ball before starting the process over again. He does it slowly for the girls to see how each stage happens.
After he compresses it enough that he's almost worried about whether or not the room can survive the spell he glances back at the girls before throwing it at the stone dummies.
*BAAAAAAAAAAAANG!*
A huge explosion shakes the floor and fills the area with dust which envelopes everyone present. Reima casts an overpowered Aard to clear the air which reveals the damage his attack had caused.
On the far side of the Colosseum, or what used to be the Colosseum is a huge crater which seems to have completely annihilated the nearby wall, the stone dummies that were previously standing there seem to have disintegrated with no indication of them ever having existed at all.
The girl who were watching this almost had their eyes escapes their sockets at the devestation the attack had caused. Nerissa approaches the crater and sees lava pooling at the bottom of it, still giving off a dangerous red glow.
Ciri "Incredible..." she mutters, wondering where Reima had obtained such power, considering he was technically still younger than her...
Reima "So, whaddya think?" he asks with a grin.
Ciri "Teach me."
Reima "Now, now... There is one other kind of magic I want to show you, so before you set your heart on "Pyromancy", I wish to show you Sorcery. Nerissa, come here!" he shouts and the girl scrambles back to Ciri's side.
He gets the room to summon around fifty stone dummies who stands next to each other in formation with large shields being held in-front of them.
Reima holds his staff up and a blue glow envelopes it, many blue orbs coalesce into existence above him, they each stretch themselves out into feet long shapes that resemble spears. After forming their shapes they seem to start growing scales, or crystals as becomes apparent the longer the diamond like materiel expands. Again, Reima had been slowing the process so the girls could observe but it still only took a couple seconds for his many Crystal Soul Spears to form and become ready to shoot.
Eventually he brings his staff down and taps the ground with the bottom of it, causing the Spears above him to fire extremely quickly into the dummy formation. Like a knife through butter each isn't even affected by the large stone spears or indeed the rubble behind them. Again Reima has to Aard away the dust but the results are obvious, the only thing remaining of the Soldiers are their feet and stone fragments that used to comprised their forms. Behind them are incredibly large bore holes into the ground that seem to not stop travelling underground, courtesy of his Crystal Soul Spears.
He looks back at the girls and sees them agape yet again, "Pretty good, isn't it?" he says cockily which seems to bring them out of their stunned silence.
Nerissa "Strong." she says regretfully.
Ciri "Were you always this strong?" she asks not believing what she had just seen, it must be a trick of the room or something.
Reima "I've been holding myself back the entire time we've been here... Watch." he says before swing his staff's axe head towards a nearby wall.
*CRASH*
It cuts into it and caused the entire wall to collapse under it's own weight, Reima is hops backwards to avoid the rubble but his point has been well and truly made.
Ciri "Geralt was never that strong, how is this possible?" she says, more to herself than Reima, he replies regardless.
"I've been training in different worlds, learning their techniques and gaining their power. It's not been easy but these are the results." he says gesturing towards the destroyed Colosseum.
"Either way, I think we should discuss which school of magic you'd rather start learning, Pyromancy or Sorcery. Both have positives and negatives but with effort, both will be incredibly powerful when mastered, even more so than the Wild Hunt's best spell casters." he says which catches Ciri's attention.
While Reima has become stronger than even the Witch or Izalith or Seath the Scaleless at using their respective magics, he's had to work for it... Not to mention his max intelligence and quick learning cheat, Ciri'll probably progress as fast as Big Hat Logan or maybe better if she were to choose Sorcery.
As always, if I missed anything please let me know.