Endless Summer

You impose a metaphysical state of perpetual culmination upon the area. While the spell persists, the affected area is locked in a condition known as Endless Summer, defined by the following effects.

Environmental Effects

The area is set to permanent late-afternoon summer conditions. Natural weather becomes calm and warm. Extreme weather cannot occur. Nonmagical food does not spoil. Plants grow, bloom, and bear fruit but do not wither or die of age.

Creatures cannot age while they remain within the area. Leaving the area resumes aging normally without retroactive effects.

Deferred Outcome

When a creature within the area fails an attack roll, ability check, or saving throw, or would be reduced to 0 hit points or fewer, that creature may choose to defer the outcome (no reaction required). The triggering effect is ignored, and the creature instead treats the result as if it had succeeded, or remains at 1 hit point.

Each time a creature defers an outcome, the spell records a Deferred Consequence for that creature. A creature can defer outcomes any number of times.

Suspended Finality

While within the area:

Creatures cannot die from hit point loss.

Conditions that would permanently remove a creature from the area (such as petrified, banished, or disintegrated) are suppressed while the creature remains in the area.

Exhaustion levels cannot increase.

These effects end immediately if the creature leaves the area.

Psychological Stasis

Creatures within the area cannot willingly take actions whose sole purpose is to permanently end a significant bond, conflict, or commitment (such as abandoning a sworn duty, formally ending a war, or dissolving a meaningful relationship, as determined by the DM). They may delay, negotiate, or argue indefinitely.

Termination

The spell cannot be ended by dispel magic, wish, or similar effects. It ends only if:

The caster dies, the deity directly intervenes, or any DM fiat occurs. 

When Endless Summer ends, all Deferred Consequences resolve immediately and instantaneously. Any creature whose deferred outcomes would result in death, aging, or conditions must resolve all of them without immunity or advantage.