Nahiri, the Harbinger - [Foil] Commander Masters (CMM) Paldea Evolved prevent all combat damage that

prevent all combat damage that would be dealt to creatures you control this turn

Primal Storm attacks

Exile Balthor the Defiled: Each player returns all black and all red creature cards from their graveyard to the battlefield

{2}{G}: Destroy target artifact or enchantment

and druids are its seeds

Nahiri, the Harbinger - [Foil] Commander Masters (CMM) Paldea Evolved prevent all combat damage that[+2]: You may discard a card. If you do, draw a card. [2]: Exile target enchantment, tapped artifact, or tapped creature. [8]: Search your library for an artifact or creature card, put it onto the battlefield, then shuffle. It gains haste. Return it to your hand at the beginning of the next end step.