Ryan probably will regret that later, but in the end, he touched the block of ice that he created by using Ice Breath and then teleported it alongside with the Hydras to where Gustavo and the others were. That cost him a decent amount of mana, but that was a problem for later.
After summoning several magic copies of his Titanium Storm Long Bow, Ryan fired a massive barrage of arrows that hit the Hydras and paralyzed them for a few precious moments. Even underwater, those beasts barely could stay shocked for more than a blink of an eye.
"Well, might as well get used to this…" Ryan thought once he noticed that Gustavo and the others still were busy fighting the three hydras.