For 1 hour after drinking it, you gain 10 temporary hit points that last for 1 hour. For the same duration, you are under the effect of the bless spell (no concentration required). This blue potion bubbles and steams as if boiling.
Potion of Heroism in the 2024 rules
The 2024 Dungeon Master’s Guide revised the magic items, and the SRD 5.2 carries the new text. What changed:
Same rarity and attunement; the text is reworded for the 2024 rules glossary.
Type
Potion
Rarity
Rare
Attunement
Not required
When you drink this potion, you gain 10 Temporary Hit Points that last for 1 hour. For the same duration, you are under the effect of the Bless spell (no Concentration required).
This potion's blue liquid bubbles and steams as if boiling.