Seasonal Birthright

When it comes to being created/born during (this season) you have the capability of unlocking/harnessing the power of the season.

Spring

When it comes to being born/created in spring, your mental capabilities increase with this following feature.

You have the ability to add your proficiency bonus to any skill, save, or attack as a reaction, regardless of it having a prof or expertise already [You can use this feature a number of times equal to your proficiency modifier] you regain all uses on a longrest.

Winter

When it comes to being born/created in winter, you can alter your magical/physical capabilities with this following feature.

You have the ability to harm your enemies further by removing a number of hit die of your choosing with your attack that hits as a reaction. [If you're a lvl 5 fighter and choose 2d10 damage, you remove the amount you rolled from your hp and place it onto the damage you dealt. FYI it follows the restrictions of the damage type the weapon/spell has.] You can use this feature twice per long rest.

Summer

When it comes to being born/created in Summer, your vitality increases with this following feature.

When you gain this feature, a person within 60ft of your sight is able to heal for double the amount, including yourself as a reaction. [This feature can be used a number of times equal to your proficiency modifier per long rest]

Fall

When it comes to being born/created in fall, your gain sickly powers with this following feature.

You have the ability to remove a certain amount to an enemies roll to any skill, save, or attack as a reaction, regardless of the situation [You can use this feature a number of times equal to your proficiency modifier] you regain all uses on a longrest.