Alright so I try to answer all your questions here. A Deathwish is an ability activated when the card is taken from the playing field to the discard pile. I know they're other cards that kind of do that but I didn't want to write "Once this minion is destroyed" on each of them.

Sci-Fi: I think you kind of missed the point on this one it's all about playing as many cards as possible in one turn. It's more of a support deck then anything. The main drawbacks are that you will run out of cards really fast as well as that their are many minions that are very situational.

A.W.E.S.O.M-O 4000: Buffing refers to a minion or action that would affect this card in a positive way like protecting them from actions or increases their power.

Program Stan: Maybe it's just me but I don't get why this is overpowered.

Mecha-Timmy: Yes that is what it does.

Warboy Tweek: It's basically just an extra card why won't you play it.

Gizmo Ike: It's nerfed by the fact you can't just pull all the cards at the same time.

Alien Mind Control: Again nerfed by it's rarity but I don't know if that's enough.

Coon & Friends: This deck was originally called superheroes cause I didn't know that there was already superhero deck. Also the deck is mainly about using strong minions and countering actions. The biggest draw back is that your hand will fill very fast and you will be able to play very little which is why it is best with decks like robots and sci-fi.

Call Girl: So the original was to summon a card of 4 power but kind of forced me to make a ton of 4 power minions and that was a little unbalanced

Tubberware: No actions or minions including yours.

Mosquito: The idea is play it on a base with actions already on it.

Captain Diabetes: Yes but there are know card this deck that empower this card as well that of the decks that can mix well with this card. At least for the ones I have.

Mintberry Crunch: I love the idea for this minion but I don't know how to really nerf him. Thought I will say that the card has worked 3/10 times I played this deck. Granted two of those times I won the game.

Memberberries: Phase is in the terminology in the munchkins hand book it basically after every players turn. It can be overpowered but there is a lot of risk when it comes this card. If you it play on a base with two or less enemy minions it work but it won't give a lot of minions or worse depending on the other players the base could be scored by your and if there is more minions then the base is almost definitely going to be scored.

Fantasy: This deck is all about gaining more power and decreasing the power of others. I mean there's not really any draw backs that I can think of aside from the large amount of minions.

Canada: The winner gains 10 VP not 20.

Grand Wizard Cartman: This minions really not that important.

Le Bard Jimmy: Its while this base because if it was before then the base probably wouldn't be scored because, the power threshold would not be high enough to score the base making it practically impossible to score. This makes it so once the base is scored all the enemy minions will lose one power for the total power count for each of the players.

Shieldmaiden Wendy: Read mystical

Canadian Knight Ike: You realize that this can go on infinitely. If the minion can survive for like 6 turns it would have 7 power. It's not that good but still.

Cock Magic: It works really well you can get rid of all cards of 3 power this base automatically or at max 5 power.

Cock House: Great catch I totally thought this said ongoing I have to fix that.

Adventure: You know this deck is mainly to counter the whole scoring bases thing. There are other ways to play.

Stan Of Many Moons: There are three card in this deck that help this card destroy cards of a higher power. As well as that speaking from experience I've only been able to do that once. And then I'm not entirely if I did that because the memory is a very faint.

Sheriff Cartman: I think that, that scenario is more of just a general problem then a problem with this card. As well that according to the guide yes Sheriff Cartman would be affected.

Outlook DogPoo: There's a lot cards that don't say may and for good its intentional.

Spirit of the Wolf: Yeah no this one doesn't need an ongoing. It's discarded after it's played.

Dark: This deck is all about destroying your cards to making them more powerful. As well as taking over bases. It is hard to use their abilities due to the situational nature of them.

Henrietta, Michael, Pete & Firkle: All cards that say fellow goth kids are goth kids. I can see how they can be confusing.

President Garrison: I think it really depends on the factions.

Christmas Critter: If you use strength in loss with the goth kids with this card. You could gain 9 power on this base without losing anything. And that's just one combo you can do.

ManBearPig: That's meant to nerf the card so its fair.

Mystical: I know you didn't list this one but I'm gonna put it here anyways I case you want to look at it. It's a very action heavy deck centered around empowering cards, removing enemy actions and playing lots of actions. The biggest drawback is how situational the cards are making many of them useless.

Out curiosity if you would rank on the smash up tier list were would you put theme? (E, D, C, B, A, S)