I suppose that's doable. Remember, the edge of the island is a sheer cliff ranging from 20 to 50 feet down, sloping sharply. Not to mention that any exertion of physical activity makes you feel like you're exploding from the inside out. It's really, REALLY cold here. Looking at the water, it's frigid and would definitely hurt if submerged.

Shrek bends down onto one knee, doffs his pack, and pulls out his masons toolkit. Unrolling the kit, he pulls out his hammer and chisel, and rapidly proceeds to chisel out a large chunk of ice to make a makeshift boat (more like a floating chunk of ice). Once that’s complete, he’ll whip our his useless shovel, finally finding a use for the five pounds of dead weight he’s been carrying around this entire time.  The shovel will act as an excellent makeshift paddle!

"Well, let's get sailing. Or, floating with purpose."

As you all step on the iceberg Shrek carved, it buoys from one side to another as you climb on, it's a tight space and it's just a huge floating chunk of ice. Not to mention it's slippery with water and it's ungodly cold. The water hits your exposed skin and it's absolutely frigid.

It's going to require a DC15 DEX check to remain on.

Lucas pulls out his rope so that those that aren't rowing can help each other stay on.

Dex: 26 if with advantage 18

Sobek grabs hold of Lucas's rope as he gets on, then crouches down to minimise the target he makes to the wind.

Dex Check: 3 (plus, if with advantage: 13)

DEX check: 8

Dex (+ if given adv for the rope): 13 | 9

Dex: 11+1

Maybe adv?: 15

Shrek, the walking oaf, grabs a loose end of the rope and steps on (DC15 DEX: 22) (or Athletics skill check, if allowed, to muscle his way onto the berg and stay onboard: 25).

Those who fail slip and get dunked into the water. Two things happen. It's unearthly cold and dreadfully painful, and until you short rest, all attacks and checks are at disadvantage as your body shivers uncontrollably and violently. You also drop another 4 HP due to shock. The giant frost skeleton readies it's weapon as you approach. From the "shore", Vellynne watches with curiosity.

"Be careful!" she cries.

Percival Dimension Doors down there and gets ready to fight.

Initiative:19

Lucas sees Perc flash into combat and quickly pulls up his bow, clicking his tongue.

Init: 13

Skeleton: 6

Initiative: 14

Shrekitive: 14

Cold Kaz initiative: 15

Light em up: 19

Brrr: 13

ICE ICE BABY
Percy19, Kai19, Skeleton18(AC14/HP150), Kaz15, Shrek14, Lucas13, Sobek13, Vetis8