The details page for Armor of Agathys is missing text in the "at higher levels" section. It reads: "When you cast this spell using a spell slot of 2nd level or higher, both the temporary hit points and the cold damage increase by 5 for each slot." (see here: https://www.dndbeyond.com/spells/armor-of-agathys).
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, both the temporary hit points and the cold damage increase by 5 for each slot level above 1st.
The Details Page:
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, both the temporary hit points and the cold damage increase by 5 for each slot.
The details page for Armor of Agathys is missing text in the "at higher levels" section. It reads: "When you cast this spell using a spell slot of 2nd level or higher, both the temporary hit points and the cold damage increase by 5 for each slot." (see here: https://www.dndbeyond.com/spells/armor-of-agathys).
The description in the compendium is correct, see here: "https://www.dndbeyond.com/sources/phb/spells#ArmorofAgathys"
The compendium:
The Details Page:
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