For example, if I’m casting a spell on a victim in 5e, I know what the DC is.
For something like “finding the trap”, in D&D that’s pretty open to the GM. I usually tell players the target number before they roll, so they can better decide if they want to use more resources or rethink.
But how do they know what the DC is?
Depends on the system, style, and context.
For example, if I’m casting a spell on a victim in 5e, I know what the DC is.
For something like “finding the trap”, in D&D that’s pretty open to the GM. I usually tell players the target number before they roll, so they can better decide if they want to use more resources or rethink.
Other systems might have more specific rules.