2nd-level Circle of the Seasons feature

You can expend one of your Wild Shape uses to take one of the aspects below as a bonus action. You remain in this aspect for 10 minutes, until you dismiss it during your turn, or you expend another use of your Wild Shape feature to take on a new aspect or transform into a beast.

Autumn’s Leaves. You have resistance to ranged weapon damage. As a bonus action while bearing this aspect and as part of the same bonus action you used to enter it, you can grant one creature within 30 feet of you, which can be you, 1d8 + your Wisdom modifier temporary hit points.

Spring’s Rain. You have resistance to fire damage. As a bonus action while bearing this aspect and as part of the same bonus action you used to enter it, you can summon a cloud of fog in your space, rendering it heavily obscured until the start of your next turn.

Summer’s Heat. You are immune to the effects of exhaustion and can’t be slowed by magical or psionic effects such as slow or stasis, and any such effect immediately ends for you. As a bonus action while bearing this aspect and as part of the same bonus action you used to enter it, you can make a ranged spell attack against a target within 30 feet of you. On a hit, the target takes 1d6 + your proficiency bonus fire damage.

Winter’s Tempest. You have resistance to cold damage. As a bonus action while bearing this aspect and as part of the same bonus action you used to enter it, you can summon a chilling wind around you until the start of your next turn. Each creature with 30 feet of you that moves toward you must spend 2 feet of movement for each foot moved, and a foe which ends its turn within 10 feet of you takes cold damage equal to your proficiency bonus.

6th-level Circle of the Seasons feature

When you take on an aspect, you gain additional benefits for 1 hour or until you take on a different aspect. If you use your Wild Shape feature to transform into a beast, you gain the benefits of equinox if it is spring or autumn, or you gain the benefits of solstice if it is summer or winter, as if you had assumed an aspect.

Equinox. When you enter Autumn’s Leaves or Spring’s Rain, you have advantage on Intelligence (Investigation) checks while outdoors and (Wisdom) Perception checks at night. You can see up to 30 feet into nonmagical darkness.

Solstice. When you enter Summer’s Heat or Winter’s Tempest, you are unaffected by extreme temperatures (but still take fire and cold damage normally), your movement speed is increased by 10 feet while outdoors, and you have advantage on Strength (Athletics) checks.

10th-level Circle of the Seasons feature

You can choose to trigger your Aspect of the Season effects with an action instead of a bonus action, and your aspects gain additional features described below:

Autumn’s Leaves. Whenever a creature within 30 feet of you is hit by an attack, you can take a reaction to make the attacker reroll the d20, and you choose which roll to keep.

Spring’s Rain. When a creature makes a saving throw, you can take a reaction to roll a d6 and add the number rolled to its saving throw.

Summer’s Heat. When a creature makes an ability check, you can take a reaction to roll a d6 and subtract the number rolled from its check.

Winter’s Tempest. Whenever a creature moves within 30 feet of you, you can take a reaction to blast it with biting winds. The creature must succeed on a Strength saving throw against your spell save DC or be pushed 10 feet away from you and knocked prone.

14th-level Circle of the Seasons feature

The duration of the blinded, charmed, deafened, frightened, paralyzed, or stunned conditions, as well as magical or psionic effects that target you are reduced by 1 round at the start of each of your turns before the effects are triggered.