Including an extra d6 to every of your attacks at 6th level is a nice reward to your Rage damage, and scales to 2d6 when you arrive at 14th level. But D&D 5e makes multi classing basic. When that is combined with two wildly different classes like barbarian as well https://warforged-artificer36802.dsiblogger.com/60958643/fascination-about-tabaxi-class