You're right, I didn't think of that. Silly of me.
Since my deck isn't complete (no legendaries and I'm missing some epics), I can't join tournaments yet, but I'm waiting for the next novice tournament without legendaries. I'm not there yet, but I'm getting closer to being able to also join the bronze tournaments without legendaries. If only there would be more of them...

Thanks for the tip, @wonderwop