Alrighty, I'll take a look at this since I haven't reviewed anything in a while. Let's do this!!!
Wingkeeper Watcher: A great recovery effect for the archetype that nabs your Spells/Traps from the grave. However, it has an added on Foolish Burial esque effect, alongside a search effect that nets you pretty much a +1. Essentially, this and an actual Foolish Burial will let you get two of your Spell/Trap Cards of your choice. I only wished that it made you send 1 from your hand instead to make it a trade off. The stats aren't anything special though but that all the more makes it fodder to your Fusion Monsters.
A cost is probably better, yeah.
Wingkeeper Sage: It has its own Summon effect built in which is nice. And then it gets a free bounce on your own card and adds a "Wingkeeper" monster. I do like the self-bounce, and the Deck thinning of this, but perhaps give it a drawback, such as you can't activate or Summon the returned card or so. Otherwise, it gives the monsters searching power and increases its speed (which seems necessary in almost every Deck).
I find preventing activation and Summoning from the hand a bit clunky, so perhaps I will limit the condition a bit more, instead.
Wingkeeper Sentinel: It is an intriguing card as it can place itself in the Spell/Trap Card Zone to make your fusions. However, you may have forgotten a OPT clause and by that, right now it seems as if you can Special Summon it and then place it back and redo the Fusion Summon effect. The recovery effect seems to be a mid game Watcher but isn't at the same time. I feel like I would run this more than Watcher.
My hope is to run all of this at the same time. Yes, HOPT is meant to be placed on all effects. Does that bring it closer to all Watcher?
Wingkeeper Skereth: I like this as it gives player interaction in a way as it allows the player to disrupt your play with this card. I do feel though that this is kind of mean to just activate a "Wingkeeper" Spell/Trap Card and then throw this out on the field to get another "Wingkeeper" Spell/Trap Card. Maybe make it if the card was destroyed instead, so that it only replaces the Spell/Trap Card with another instead of merely giving a plus.
You notice that it activates whenever it is Special Summoned, not just when it is Summoned from the hand by its own effect. I am going to work a self-bounce effect into the activation of another Spell/Trap, and hit it a little anyway.
Wingkeeper Zruka: It does too much for a Main Deck monster that can Special Summon itself from the hand. It has a balanced destruction effect, but it seems to be able to recycle itself and a card to the hand! I am unsure on whether to mark it as a bit overpowered or not.
Do you think making its Summon from the hand an effect would bring it down just enough?
Wingkeeper Isa: It has a Speed 2 version of Negate Attack + Self-Special Summon, and it has a your-sided Compulsory Evacuation Device + Neo-Spacian Hummingbird LP recovery effect. Furthermore, it can recover itself from the Graveyard..., I would take off 1 of these effects as it has too much going on here.
Heh, I really went to town on this one, obviously. Which one do you think would be the best one to remove? Considering removing the LP gain, but don't know if that's enough.
Assault: If this card can recover your Wingkeepers from the Graveyard without a cost, I see it that the monsters themselves do not require such effect like this. If you do that, it pushes the player to use the Spell/Trap Cards to recover their monsters. The only real thing going for this card is the Special Summon effect, which revives 1 of your dead Wingkeeper Fusions. Otherwise this card is overshadowed by your other cards.
Ah, I see what you mean. I'll remove the Graveyard adding then, leaving it to the Spell/Trap cards.
Experiments: The unlimited hand size limit effect allows you to extend your plays without worrying about discarding at the End Phase for having to many cards in your hand. It has a continuous "Wingkeeper" personalized Polymerization for it which isn't much. Then it has the effect to revive a non-Fusion "Wingkeeper" from your Graveyard at the cost of sending a "Wingkeeper" monster from your Deck to the Graveyard, if that is even a cost. The last effect is basically a self running free Special Summon as long as this card is face-up.
...does that mean you think it's fine? ;3
Battlefield: The stat boost is quite large for a Continuous Trap. With 3 of these, that would give a 3000 ATK and DEF boost, which is quite a lot when you think about a Level 4 Wingkeeper becoming a 2800 beater or perhaps even a 4800 beater. It has a return effect that allows a delay Special Summon at the End Phase. It is good that this part is slow, but at the same time, it allows you to play cards and then in the end add that card back and Special Summon it once again.
Just before I change anything, I was drawing from Dark Contract with the Witch. Dunno if the genericness does make it too strong anyway. 800?
Arson: Despite its name, I see no random burn effect anywhere. In the end, it can allow you to reuse a "Wingkeeper" monster later as it returns to the hand, and get rid of annoyances on the opponent's field. You can also set your Spell/Trap Cards from the Graveyard but it can't be activated that same turn. In all, this card seems balanced since only 1 of the effects can be used. Both are great to make your plays wider and is also balanced by the fact it is a Continuous Spell/Trap Card.
Burn effect. Completely missed opportunity. Not going to insert an effect, but adjust one.
Woooo, time for the Extra Deck!!
Wingkeeper Krell: It has a built in protection from battle and card effect. This is an easier to Summon Beelze with a stronger bounce than that of Castel. More than just overpowered, it has bouncing and protection with nice stats for a Level 7 that can enter the Rank 7 Xyz territory if wanted.
Easier to Summon? Removing the protection by battle, but I still feel it is at least a little less generic than Beelze.
Bahou: Built in protection just like Krell. Slightly more difficult but has more generic materials needed instead of more specific materials. It doesn't allow the opponent to respond to your attacks with any card effects. It also has a more specific float effect that Foolish Burials a Spellcaster. I would say this card is fine, if its float effect was less heavy on the opponent. They do have to work to bypass the battle and card effect protection after all.
Was hoping to not put HOPT on any float effect. Would removing the Foolish nerf it just enough?
Ayeshrat: A more archetype based summoning condition which balances this out a bit. It also forces you to throw your pluses away so you can get the boss out too which is fair. It is a floodgate for Graveyard, and allows you to replace unneeded Wingkeeper Spell/Trap Cards from your Graveyard which is great when you're in a sticky situation. That's the problem, I feel this card should be allowed to activate it during either player's turn. Its float effect seems to be more balanced than the other Fusion Bahou. Was this intentional? It makes me feel like wouldn't want to play this when Bahou and Krell are already overwhelming the opponent than this. The only real plus side to this card is that it plays floodgate. The other Fusions are basically better options that take less to make and are worth it more than this boss monster and that is a tragedy.
No, that was not intentional. RIP. I was thinking it would be more powerful as it gives more field presence. But then again, this card does have a cost, so I'll probably add that to Bahou and Krell. During either player's turn sounds fine.
All in all, the archetype has a big focus to swarm and recycle by returning to the hand. But it lacks variety in a way and the Fusions seem to lack sight of balance when the lower cost Fusion seems to overpower the boss. At some point, this may even be played as a Rank 4 Spam Deck instead of its actual focus of Fusion. I'd give this a 7.4/10.