Would you be able to teleport to the other side of a window that you can see through with this? Or would this fall under the restrictions of A Clear Path to a Target? (Despite seeing the desired location, you can't teleport there because the location is under Total Cover.)

I don't know the answer to that question but I did use it to teleport into a room while looking through a keyhole. Might be up to your DM and how your party likes to play.

Sorcerer 

Quote from Aether_Veilborne >>

Would you be able to teleport to the other side of a window that you can see through with this? Or would this fall under the restrictions of A Clear Path to a Target? (Despite seeing the desired location, you can't teleport there because the location is under Total Cover.)

I would not say that a transparent window provides Total Cover.

Quote from wagnarokkr >>

Quote from Aether_Veilborne >>

Would you be able to teleport to the other side of a window that you can see through with this? Or would this fall under the restrictions of A Clear Path to a Target? (Despite seeing the desired location, you can't teleport there because the location is under Total Cover.)

I would not say that a transparent window provides Total Cover.

 Crawford does.

would misty step provoke an oppertunity attack?

Quote from Cupcake_the_undertaker >>

would misty step provoke an oppertunity attack?

Rules as Written? Yes, it's a bonus action used to exit the threatened space so it triggers an attack of opportunity. Personally as a DM? No, its instantaneous movement so there's no time to react.

Quote from Aether_Veilborne >>

Would you be able to teleport to the other side of a window that you can see through with this? Or would this fall under the restrictions of A Clear Path to a Target? (Despite seeing the desired location, you can't teleport there because the location is under Total Cover.)

Rules as Written? No, you would teleport next to the window rather than through it. Lore wise, the mist would strike the window and not be able to pass through it. Personally as a DM? I'd probably allow it as long as they weren't being ridiculous about it.

Quote from HBDrayce >>

Quote from Cupcake_the_undertaker >>

would misty step provoke an oppertunity attack?

Rules as Written? Yes, it's a bonus action used to exit the threatened space so it triggers an attack of opportunity. Personally as a DM? No, its instantaneous movement so there's no time to react.

 What are you talking about? Rules as written you don't trigger attacks of opportunity when you teleport.

that is correct, page 376 of the 2024 rulebook says "teleportation never provokes Opportunity Attacks"

Those all sound like interpretations. The spell has a rule for where you can teleport. It's "an unoccupied space you can see." Not what you can see through, or how big a window or keyhole or cave entrance needs to be. The only thing that's really up to the DM is how filthy the window is.

If you were absorbed into a gelatinous creature, could you Misty Step your way out of it?

If the caster is shackled, would misty step allow them to teleport out of the shackles? Since there's only a vocal component, the shackles don't get in the way of casting, but would they teleport with the caster?

Depends on the type of shackles, I'd say. Manacles are considered worn equipment, just like armor, or a shield so they would transport with you. But shackles bolted into a wall could be considered as part of the environment, then it would depend on the DM.

Quote from AldarEinarson >>

If you were absorbed into a gelatinous creature, could you Misty Step your way out of it?

As long as you can see an unoccupied space in range to teleport to, yes. Teleportation effects in general are a classic way to deal with problems like that.

Edit: actually no, but for a different reason, see below

Quote from wagnarokkr >>

Quote from AldarEinarson >>

If you were absorbed into a gelatinous creature, could you Misty Step your way out of it?

As long as you can see an unoccupied space in range to teleport to, yes. Teleportation effects in general are a classic way to deal with problems like that.

 Gelatinous Cube specifically states that you can't cast spells with Verbal components when engulfed (presumably because you are suffocating). So, in that instance, you would not be able to cast Misty Step.

Quote from ajsanft >>

Quote from wagnarokkr >>

Quote from AldarEinarson >>

If you were absorbed into a gelatinous creature, could you Misty Step your way out of it?

As long as you can see an unoccupied space in range to teleport to, yes. Teleportation effects in general are a classic way to deal with problems like that.

 Gelatinous Cube specifically states that you can't cast spells with Verbal components when engulfed (presumably because you are suffocating). So, in that instance, you would not be able to cast Misty Step.

That's a very good point. You'd have to be a Sorcerer with Subtle Spell or something like that.