tried to memorise the oracle FG and went onto forums to get the code when i forgot the FG i was supposed to counter
I do this
all the time. What I generally do these days is refuse to leave the oracle screen until I have another window open to the correct prediction deck.
The other thing that's fun in that vein is (with a new alt) needing to go farm ai3 a couple of times to be able to afford the FG counter, loading up an AI3 grinder, and then just going ahead and clicking FG with the ai3 grinder and burning the prediction. That one's worse when I do it
after I've done the grinding to be able to afford the new prediction deck and just forget to switch to the prediction deck.