[RPG] nything that can bypass temporary hit points

dnd-5ehomebrewspellstemporary-hit-points

I have found a wizard spell from The Book Of Lost Spells, called Soul Shield. In my opinion, it is super overpowered, but my DM has allowed it.

The spell says that a wizard can convert their "real" hit points into twice as many temporary hit points, so long as you always leave yourself on at least 1 "real" hit point.

I instantly saw how amazing this was, however it leaves me wondering if there was a poison, disease, monster ability or the like that bypasses the buffer provided by temporary hit points and removes my remaining "real" hit point.
I have looked for such an ability, yet found none.

Is there one?

My DM likes to take things from homebrews quite a lot, so long as they are balanced, and I have had a look through a number of different sources. As such, a homebrew compendium is an acceptable answer for this question, but please link the source.

The spell in question works as follows:

Soul Shield

2nd Level abjuration

Components: VS
Casting Time: 1 action
Duration: 1 hour
Concentration: No

You siphon some of your life force into a shimmering shield of light around yourself. Sacrifice any number of your hit points (up to your current total -1) when you cast the spell, and you immediately gain twice as many temporary hit points. You must leave yourself at least 1 “real” hit point. While any of those temporary hit points remain, you get tactical advantage on Dexterity and Constitution saving throws. Remaining temporary hit points disappear when the spell ends. The spell ends immediately if all the temporary hit points are lost.

Best Answer

To my knowledge, no attack bypasses temporary hit points when dealing damage. However, some spells have effects based on the targets' hit points, and cannot be countered by having temporary hit points. For example:

  • Sleep (L1 spell) only takes into account the targets' hit points, and can put a target into sleep much easier if they have low hit points remaining.
  • Power Word Stun (L8 spell) automatically stuns a target with 150 or less hit points
  • Power Word Kill (L9 spell) can instantly kill a target with less than 100 hit points.

Dispel Magic is also a convenient way to strip a character of most magically granted temporary hit points, leaving a character relying them vulnerable to reprisals.

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