I like to put away the game carefully after finishing a campaign and check that everything is there. I could only find two Electrostatic Discharge and when i checked all my Great Seal cards were numbered out of 14, with ED being 13/14 and 14/14. So don't panic.

Mind Wipe was quite bad card. Most enemy with annoying effect has Victory X, and Mind Wipe remove Victory. I believe most of you don't want to forget Victory to avoid annoying effect. Thus, in many cases, Mind Wipe is adopted to counter annoying weakness enemies such as Your Worst Nightmare, The Thing That Follows, or (friend's) Tommy Malloy. Sometimes, Mind Wipe is utilized as single target Taunt to make auto-engage against aloof enemy.

As the time is gone, some of enemy have annoying effect without Victory point. In this reason, Mind Wipe become considerable card in some campaign. Nevertheless, the play timing of Mind Wipe is quite bad, and we need to consider to counter enemy. You can only play Wind Wipe to the enemy with you at the start of phase. You cannot play for hunter enemy moved to you during enemy phase. You cannot play for just spawned enemy during mythos phase. You cannot play Mind Wipe after you move during your turn.

The below contains spoiler about many campaign.

Forgotten Age: As the other review said, you can remove annoying Vengeance X. Additionally, there are some more target such as Brood of Yig, Brotherhood Cultist or lots of aloof enemies.

Innsmouth Conspiracy: Commonly, you cannot ignore engage effects of enemies. However, Deep One Nursemaid is good target (during mythos phase or investigator phase).

Edge of the Earth: EotE has many enemies for Mind Wipe. Skittering Nonsense, Primordial Evil not to get Tekeli-li card. Lost Researcher, Frenzied Explorer to remove doom with defeating. Horrifiying Shape, Giant Albino Penguin for auto-engagement. Guardian Elder Thing to avoid milling your deck. Constricting Elder Thing to instant kill (in my opinion and it may wrong ruling). In fact, I determine writing this review because of Edge of the Earth campaign. There are many targets for Mind Wipe, and I think you have a chance to playing Mind Wipe for all scenarios.

Per the Move rule, move cannot be attempted if it would result in the same location. Therefore if there is only 1 on the field and it is already right on your location, the only choice is to add doom on it. (Instead of "Lucky encounter draw! It is already here!")

When an entity or game element moves, it cannot move to its same (current) placement. If there is no valid destination for a move, the move cannot be attempted.

I think this might be quite good on Daniela Reyes! Since her ability works even when the attacks are cancelled, you could play this when engaged with a bunch of enemies, they deal no damage to you but you still deal 1 damage or evade them.

Might be considered a spoiler by some, but is probably an important rule clarification for others, in particular new players: Better double check Appendix III of the Rules Reference before playing this game.

Important of note is, that damage and horror from traumata are taken in step 2 (and only at that time, Voice of the Messenger for example does not dish out immediately an additional damage or horror from the trauma you take), while reading the scenario introduction is step 9. So, if you happen to take a trauma in the scenario introduction, you won't start with the additional damage or horror until the game after this one. That's different to all of the in between traumata you might gain in The Forgotten Age, because they happen in interludes, and hence after the previous game, before setting up the next one.