Level
6th
Casting Time
10 Minutes
Range/Area
30 ft
Components
V, S, M *
Duration
Instantaneous
School
Conjuration
Attack/Save
None
Damage/Effect
Buff (...)
You bring forth a great feast, including magnificent food and drink. The feast takes 1 hour to consume and disappears at the end of that time, and the beneficial effects don’t set in until this hour is over. Up to twelve creatures can partake of the feast.
A creature that partakes of the feast gains several benefits. The creature is cured of all diseases and poison, becomes immune to poison and being frightened, and makes all Wisdom saving throws with advantage. Its hit point maximum also increases by 2d10, and it gains the same number of hit points. These benefits last for 24 hours.
* - (a gem-encrusted bowl worth at least 1,000 gp, which the spell consumes)
It's also worth noting: this is a magical effect, and so it can in fact be dispelled. You can't go too crazy with it, because you don't want to completely undermine your players or you'll suck the fun RIGHT out of their game. However a green dragon of a high enough level will more than likely know about this spell, know in turn that it poses a serious problem to it in regards to dealing with would be heroes, and therefore may actually setup a trap within it's lair specifically to designed deal with this spell.
Antimagic Field would also put a damper on the Heroes Feast spell, but that is a level 8 spell so that isn't necessarily as helpful for a DM. Though it is certainly something an Ancient Green Dragon may well possess.
Don't forget, a LVL 14 Bard of Creation ignores the GP limit for their Performance of Creation. You can use that to instantly grab yourself the expensive bowl for the spell.... FOR FREE.
I took it as a Bard because we had fought an ancient green dracolich and had to retreat. So when we leveled up I took Feast and tje party pooled money to buy a bowl and cast the spell before entering the dracolichs domain. And soon after killed. I leveled up after that battle and will be replacing Feast with another spell.
I homebrew as you get an exhaustion level back
You can't Dispel Magic the effects of any spell with the duration of Instantaneous, according to the Sage Advice rules clarification. So the effects of Heroes Feast cannot be dispelled because the 'effect' of the spell is to create a feast. The benefits of eating that feast are not dependent on the magic of the spell.
Reread page 203 of the Player's Handbook.
INSTANTANEOUS. Many spells are instantaneous. The spell harms, heals, creates, or alters a creature or an object in a way that can't be dispelled, because its magic exists only for an instant.
While I agree with you that the creation of the Feast is instantaneous, the spell clearly states that the benefits of the spell have a fixed duration of 24 hours. The benefits are a direct result of the magic held within the Feast when it was created. While it doesn't state that this is a magical effect explicitly, it's not much of a stretch to treat the benefits of the Feast as such.
In reading through the spells that show up under the "Buff" filter on this site, the only other spell that is instantaneous in duration that also has a lasting Magical Effect is Ceremony, and I would also argue that some of those effects could also be dispelled if targeted.
I do agree that once the food is created by the spell, the magical properties that it confers to those who eat it cannot be dispelled, just like any other magic item. I do wonder what would happen if someone wasn't able to finish eating the meal within the 1-hour time frame. I might rule that some of the benefits but not all are imparted if something actively disrupted the players from eating any significant portion of the meal. OR, is one bite enough to gain the benefit, and the magic within the Feast can only be imparted to 12 creatures, regardless of how much they eat within the hour?
Regardless, I don't think the intention of the spell was to create a buff for players that could not be removed in any way for 24 hours. I can't think of anything else in the game that does something similar that would be immune to the effects of a Dispel, and I'm happy to be proven wrong if so.
Final thought: In reading the errata for Dispel Magic, it does seem to imply that it can't affect the effects of the Feast per the below:
Dispel magic has a particular purpose: to break other spells. It has no effect on a vampire’s Charm ability or any other magical effect that isn’t a spell.
If that's the actual case, what recourse does an opponent have to deal with it, if not something like Dispel Magic? Wish? I guess I could customize a campaign a bit to make sure baddies are diversifying their abilities so WIS saves and Poison are not something that is encountered with regularity. OR, maybe it is, and it's a great way to get the party to spend large amounts of cash keeping an artisan working 24/7 pumping out more of the bowls.
The answer for the question of what recourse does an opponent have to deal with it is simple: none. If your players got this spell, obtained the material components, planned well enough or had good enough luck to be able to use it just let them have the win. Not everything the players do should be countered. As the GM you have world builiding power so there is no need to foil all of your players' plans.
"You bring forth a great feast, including magnificent food and drink."
Does the "great feast" include the Table/bench, chairs, utensils, dinnerware, as well as the "magnificent food and drink" or only the food and drink? Or is that DM discretion?
If everything included, are the buffs sourced in just the food and drink or by being present to the non-food and drink? Or is that alos a DM discretion?
Is the food and drink magic detectable or does it merely have the look of regular very good food and drink?
The question bears on some sleight of hand play. If a diplomatic character, for example, calls up the full feast, removes the buffed food and secretly replaces it with regular food and regular drink, and offers the meal to the good PCs and evil NPCs, suggesting a fair equitable meal of buffs, but not really, as a subterfuge, will the buffs not really be available or does the non-food and drink items provide the buff anyway?
Spellcasting focus with this spell. You could spend like 10gp on a staff or something and then cast an ever-loving feast. Although I’m not sure if it consumes the focus or not
Spellcasting Focus can not replace a Material Component that has a monetary value called out.
Reference either either Basic Rules or Player's Handbook, Chapter 10 (Spellcasting) in either reference.
(link here to the Basic Rules as not everyone has paid content): https://www.dndbeyond.com/sources/basic-rules/spellcasting#Components
"Material (M)
Casting some spells requires particular objects, specified in parentheses in the component entry. A character can use a component pouch or a spellcasting focus (found in chapter 5, “Equipment”) in place of the components specified for a spell. But if a cost is indicated for a component, a character must have that specific component before he or she can cast the spell."