Warp Sense 5e Conversion

Here's my take on a 5e conversion/update for Warp Sense, the most essential spell for a Planescape campaign. Might change it at a later date - not entirely happy with the "At Higher Levels" part - but then again, I might not. Part of the spell requiring you to use your movement is a bit of an oddity, but I think it's a fun idiosyncrasy to carry over from the original.


Warp Sense

2nd-level divination (ritual)

  • Casting Time: 1 action
  • Range: Self
  • Components: V, S
  • Duration: Concentration, up to 1 minute

For the duration, you sense the location of up to two planar portals within 60 feet of you. If there are more than two portals within range, you sense the nearest two. When you detect a portal in this way, you learn whether it is one or two-way, and can use your action and all of your movement to learn either the portal’s destination plane, or the key required to use it, if any. Determining either requires a DC 13 ability check using your spellcasting ability. On a success, you have advantage on your next ability check to learn information about that portal using this spell. On a failure, you cannot use this spell on that portal for 24 hours.

The spell can penetrate most barriers, but it is blocked by 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the maximum number of portals you can sense at any time increases by 1, and the radius of the spell increases by 60ft, for each slot level above 2nd. When you use a 7th level slot or higher, the radius of the spell is unlimited.



There you have it. Only other question is: what classes have it on their spell list?

Wizard, obviously. For my money, also Bard and Artificer. Bards could cast any Wizard spell back in the AD&D days, after all. Probably Ranger and Druid too? They're both classes attuned to nature and its irregularities, and portals are natural things as far as I'm concerned. Not Cleric, and I don't think Sorcerer either. Not that I see any Sorcerer taking the spell, what with their limited number of spells known.

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