When using wildshape, the druid can chose one of three aspects that lasts until the wildshape ends;
Aspect of the Den Mother: As a reaction, if an ally within 15 ft. is hit with an attack or spell attack, move to a square next to that ally, and the attack hits you instead.
Aspect of the Striking Viper: Your wildshape attacks gets 10 ft. reach
Aspect of the Stalking Huntress: If you end your round within shadows, or outside line of sight of enemies, you turn invisible (same rules apply as for invisibility) until the end of your next turn.