Our home-brew version of 2nd Ed Pandora ran something like this (if I remember well)
D6 Adventure Cards, D6 Spells. Curses and Hope
Nothing Good can happen to someone off the Crown i.e. the targets of the CoC Pandora effect.
If Enemies, they combined and attacked you in one shot. If ST and CR were together, they added up and fought in your weakest. Since nothing Good can happen, any wins can NOT be taken as trophies.
If an Event / Stranger / Objects etc…is drawn, if something Good was going to happen, say, if though a random roll of the table, “nothing happened” instead. The Card was discarded. If something bad i.e. lose a life, toad, etc… it happened.
Spells? Same thing. If random type spell, you never got a benefit even if the table said so. Otherwise, you’d lose the life, follower, stat, etc…
Nothing Bad can happen to the CoC Pandora wielder.
I.e. no playing enemies on yourself because they could hurt you which is something Bad. (This was just so a person wouldn’t play Low ST/CR enemies on themselves to power up. FYI this was later changed when too many stalemates occurred, putting a time pressure once Pandora was up)
If an Event / Stranger / Objects etc…is drawn, the CoC person can play them on themselves and keep the object, drink from the pool, etc... If random roll, and something Bad came up “nothing happened”.
Spells? Mirror image of #1. No Bad effects for CoC Pandora users playing a spell on themselves.
For some reason, even with the above, Pandora wasn’t as much of “a win advantage” as we’d have liked, so, on the last few months before the owner of the Talisman board moved away, we added the “doesn’t have to play the cards on his/her turn but has to before their next turn.”. Means that an opponent draws a ST 3 widget that might make you lose a ST (which, at ST 3, is pretty Mickey Mouse at endgame), or whatever, the opponent would get a surprise as the enemy cavalry appeared, at the discretion of the Pandora owner.
Pretty crazy bookeeping, but still not big.
Don’t get me started on the ST 10? 12? Belt ending. Our group was usually (Dam look away now please, heh) 18+ in both stats before we hit the CoC, making the belt useless. We made the belt +12 ST or whatever it was. But… that’s another topic.