I was going through an Ocean Monument and I found how much a Prismarine Shard looks alot like an arrowhead. So I was thinking hey, wouldn't it be cool if we could make underwater arrows using these?
These arrows would have the ability to be fired underwater without getting slowed down by the water. This would make clearing Ocean Monuments easier, but the catch is you would need to go into an Ocean Monument to gather them. Anyways what do you think?
Well, seeing as you only listed that the only difference is that they don't get slowed in water, I assume they have the same damage and mechanics as arrows, I would like it if they were slowed in air, but are normal in water so they are not a straight upgrade, but other than that I like this idea.
You can't enchant arrows, but I assume you mean bow enchants so I am gonna say that it's okay.
You can add potion effects to arrows, which is what I actually meant. This is rarely used since you need dragon breath and they don't work with infinity. So maybe adding effects to these arrows would be interesting, it would overall be alittle pointless.(pun not intended)