Felica watch with wide eyes, then she released a shrill screamed in frustration. She shot to her feet and mounted Karina with all the haste of a speeding Rapidash. "KALE, RUN!" She took off into the forest at top speed, fully aware that those trainers may have just provoked a calamity. Attacking the lake was a brilliant idea, or so it would appear, however, who said the Milotic was the only Pokemon living in the lake?
. . .
As arcs of electricity races across the lake's surface and up the Milotic's body, she threw her head back in agony. The subsequence solar beam landed a direct hit and she went careening into the lake. Her limp body floated on the surface of the lake, she wasn't taken out but that jolt of electricity had launched all her muscles into rebellion. She was not, however, defenseless. The Aqua ring still hummed about her restoring her wounds and the wicked bolt of thunder that had slammed into the lake had filled its entirety. The galvanized lake seethed as if it had just been injected with liquid thunder -which in a sense it had. The cries of the Pokemon echoed out like a rumble of thunder as the water surface was torn asunder by the emerging, and enraged Pokemon. The looming silhouettes revealed themselves to be other Milotic, Gyarados, Huntail and Gorebyss. Beneath the serpentine pokemon were the heads of Whiscash, Lumineon, Luvdisc, Octillery, Vaporeon, Basculin, Golduck, and Relicanth to name a few. Pokemon such as Crawdaunt, Poliwrath, Politoad, Slowbro, and Seismitoads lept from the water, landing on the shore. The scenario instantly turned from the trainers ganging up on the Milotic to them being hopelessly outnumbered by a swarmed of livid water-types.
Chaos instantly erupted! Under the condemning cries of Pokemon, a light-show of Hyper-beams were launched from the group of Gyarados, accompanying it was the swelling waters of the lake under the combined Surf of a school of Finneon, Lumineon, and Luvdisc. A group of Poliwrath charged forwards throwing Dynamic Punches, Poliwhirls croaked out Hyper Voice in synchrony and Politoads launched a lulling shower of Hypnosis. Unfortunately for the trainers, the slew of attacks was but a fraction of the water-type's wrath. Hydro-Pumps, Mud Bombs, Psychics, Ice Beams, Bubblebeams, Octazookas ...
If it was a move water type could learn, then you could probably find it whistling through the air towards the group of trainers. The aquatic Pokemon displayed the primordial wrath known only to the oceans in a devastating display that even legendary Pokemon could only avoid.