u/Surrounded-by_Idiots

I somehow got a KosMos on my first rare blade pull on Rex, and I’ve watched enough videos to know she is rare. However, today as I watch more videos, I found out that 1. shouldnt bother pulling on Rex and 2. Rex isn’t not good at cannons and 3. it costs a rare item to move blades around.

Now I’m paranoid about pulling any further. What if I gimp my game now by getting all the wrong blades on the wrong drivers? Am I missing something? Most of my knowledge is theoretical for now so happy to hear from experienced players.