Board Game Arena

hello I have a newbie rule question for K2.
Green cards are move cards, and blue cards are safe cards, who increase you “warm points” (Don’t remember the exact word)
Until then am I right?

If I am, why blue card with zero value exists? It increases nothing …

If you have to suffer a risk token you can only do so with a climber who received at least one card that round.

You could use the blue zero for that, f.e., if you want to only take important turns with the one climber but want the other one to suffer the risk.

Other than that: the card makes it also a bit harder as you have to at some point play this card through which you gain nothing

ok thanks