Edge-case scenario for when it enters the battlefield, but oh-so-flavorful! And it matches the art well! I mean, the original design made little sense with its mechanical drawback. Is that your ship that it's messing with?
To compensate for the effect not being applicable most times (River Boa is the only creature with islandwalk in the set Visions, where the original card originally appeared), I made sure to cost this creature with just one blue mana (albeit, it had to be at an elevated mana cost to compensate) to make it more accessible as a general beefy flier. Sapphire Drake is a good example.
Lastly, I like how shuffling a creature feels like being hit by a whirlpool. It usually means you're a goner, but you never know where you're going to end up, and you just might pop up later after being the eventful whirlpool.