You will just need to add Thunderclap to the item using 0 charges. It will show as “At Will,” on the character sheet however, so you will need to make the distinction very clear in the weapon’s text description. There is no possible way to make such a thing to automatically happen on a Nat 20 at this time.
I'm trying to make a trident where if I roll a 20, it will cast thunderclap, but I don't know how. HELP PLZ LMAO
You will just need to add Thunderclap to the item using 0 charges. It will show as “At Will,” on the character sheet however, so you will need to make the distinction very clear in the weapon’s text description. There is no possible way to make such a thing to automatically happen on a Nat 20 at this time.
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