U guys, the next episode with the cards is actually important, they use those cards in the manga for Boruto and Kawaki for important reasons. Which shows we are getting close to the important stuff. Btw the anime isn't filler.
Kawaki arrives in two more arcs from the manga. Right now we only adapted one arc the momoshki arc the next arc they're forshadowing is the mujina bandits arc, and later the scientific ninja tool arc, at end of this arc is when they show Kawaki so two more arcs from now but the anime is taking too long to adapt.