We ended up spending all day at the Coliseum, almost everyone's fight was quick, but there were some unexpected fights that took a long time, these were the fights of Irina, Nix, and Karina.
Irina had the misfortune to face an enemy immune to corrosion, Dragonewt with dark skin and green scales, he spit acidic mist, and his claws also had acid.
Her fight took a long time because without her corrosion she had to fight using only her barriers in many forms, which ended up becoming a battle of resistance that she only won by having more than twice as much Mana as her opponent.
Karina's fight was against a Man-beast with wings, she couldn't identify her tribe precisely, but Diana said it was a condor, he was very fast and used Ki from the wind element just like Diana.