Hello, just a quick question:

If we play a card that has an ACTION that say for example "All opponents must sacrifice a unit in quest zone", can we cancel that ACTION with another ACTION that say "Cancel the action just played". In rules it says sacrifice is absolute and cannot be cancelled by other effects, yet it also says that actions can be cancelled by other actions.

Same goes fro Non Combat Damage. If an ACTION say "deal X combat damage to this" can we cancel it with another ACTION that says "cancel the action just played" ?

Thank you.

Yes.

In your first example, the sacrifice will happen when the action resolves. You respond to it with another action that cancels it, and (assuming there are no further responses) then you resolve the action chain in reverse order, so the action that would have resulted in the sacrifice gets canceled and no sacrifice takes place.

It's the same in your second example, the damage only gets dealt if the effect resolves successfully. If it gets canceled, that doesn't happen.

Note that an action that cancels another action or a card just played needs to be on the same action chain as the action/card it cancels. You cannot wait until the chain is resolving.

Thank you friend, you helped me. Cheers!