Sorry for all those guys that took their time answering here. I did a lot of more research after the thread and saw that I was wrong and indeed there are cases where you should save cards, but didnt edited the post. Altought, the thread was still useful to incite the discussion cause many people got the opportunity to know about this (not even close to being common sense), and also to show IMC maybe the map design flaws over the progression.
I’ll edit the main thread ASAP to not misinform more people. Thanks for all the info and sorry for the trouble.

