This card should see lots of use, since it is the first level 0 guardian accessory and healing is welcome in many guardian decks. After the first Soothing Melody, you have in effect played an Emergency Aid (but can heal horror!) plus an action to draw a card. Then the second and third melodies give great value! The total healing for all three is 6 damage/horror for 0 cards (each mirror/melody replaces itself), 2 resources and 4 actions. This is incredible value, comparable to the economy of the neutral upgrade armor and the upgraded Clarity of Mind.

Here are comments for each investigator who can use the mirror:

1. "Ashcan" Pete. Healing is not quite as necessary for Pete so he will probably not take the mirror.
2. William Yorick. William wouldn’t use the mirror, because when it leaves play he cannot use his power to play the melodies again. He would rather recur his Cherished Keepsake or Police Badge.
3. Akachi Onyele. (Occult allows her to use it) Probably not worth using over Holy Rosary.
4. Diana Stanley. A decent choice for her since many versions forgo the mystic accessories. It’s better if she uses Guard Dog.
5. Jim Culver. Hard to compete with the mystic accessories, but a few versions may choose the mirror.
6. Marie Lambeau (occult). Her power makes the melodies a free action. But again, hard to compete with the mystic accessories.
7. Joe Diamond. He should use it since he doesn’t have another accessory and he wants extra healing for damage and horror resulting from his low willpower and agility.
8. Rex Murphy. He could use it but it doesn’t help his investigate focused plan.
9. Carolyn Fern. I think she loves the mirror enough to skip her other accessory options. Each melody can be split to activate her power and heal a damage too. She can protect the mirror using Ward of Protection.
10. Leo Anderson. Big money versions may want Lucky Cigarette Case or Decorated Skull. But some versions may use the mirror.
11. Mark Harrigan. Auto-include for him! The healing will undoubtably help balance his power sanity and activate his power. Funny to imagine him singing a soothing melody into the mirror while holding his tommy-gun though!
12. Roland Banks. He likes the healing to balance low sanity, and doesn’t have any accessory clashes at level 0.
13. Zoey Samaras. Clashes with her Zoey's Cross, so she probably wouldn’t use the mirror.
14. "Skids" O'Toole. May choose the mirror unless he goes for Lucky Cigarette Case or Decorated Skull.
15. Jenny Barnes. Probably doesn’t justify 1/5 slots for her, and she likes her cigarettes.
16. Lola Hayes. You might think she would like this since she’s an actress. But whenever she draws her weakness on guardian she immediately smashes the mirror, so it isn’t good with her.

Oh my god this card is amazing.

Whenever I draw this card I swear I can hear Samuel L. Jackson somewhere in the background saying "Motherfucker" with an approving tone.

The sheer amount of garbage that may pile up in any given scenario is crazy, literally like an ever growing headache. Alter Fate is the pill that makes the headache go away, or perhaps cures the cancer outright! In many scenarios this is the card you save Resourceful for in particular.

Admittedly, I don't think a solo player draws persistent gunk at a speed fast enough to warrant Alter Fate, it's a liability when you dont need it and your deck probably requires other, important, level upped mechanics. In two player or three player the amount of gunk goes up and the sheer usefulness of making the gunk go away is stupid good. I did a little check and every single scenario from the release up to the conclusion of Path to Carcosa and start of Forgotten age had at least a couple perfectly viable targets. Every scenario!

One of these days, if you haven't already, once you've slotted your first 8 XP worth of important XP upgrades, try spending you next 6 on a couple of these. They are great.

Edit, campaign evaluation:

Dunwich and Circle unbound in particular reward playing with Alter Fate.

Forgotten age it can be clutch, but there are less "GOTCHA!" persistent treacheries in this one.

Carcosa has a few good targets, but also an occasional dud scenario. Definitely lower priority due to the deckslot.

Baffling card, it's literally so bad that words can barely describe it. It's barely useful even if it were a 0-xp card, much less 3!!

So, what does it do exactly? It:

• Negates all non-elite attacks during the enemy phase.

For this to be useful, there needs to be an enemy phase where enemies are going to attack you, an unideal circumstance to start with, if there is a non-hunter enemy attacking you that means that you've gone a full round engaged with an enemy, failing to deal with it or ignoring it wholly, or ended your round for some reason with a ready enemy. The other case is if a hunter catches you, this might be more probable but still not ideal or common by any means (Not that hunters are uncommon, but the usual response to a nearby hunter is to go and deal with it, not stick around and wait for it!)

There is another card that harkens to this one, On the Lam, seing how this strength operates and gives you total freedom for a round sorta displays what they were thinking for Infighting, it's just not nearly as useful!

The biggest issue with Infighting is that its a niche card that does nothing but ease the pressure off you a LITTLE, but only when you're completely drowning in trouble. The non elite text is the real dealbreaker here because it's during battle with Elites where this particular effect would be good (or rather, the time where youre most likely to drown in enemies), Infighting is basically a fancy Dodge, in fact I think 3 Xp is just right an amount of XP to turn Dodge into an "AoE" effect, but it isn't, and it's just terrible.

P.S Oh, just to be fair, at least it has pretty great icons. Most of the time it'll be a 3-xp Unexpected courage with some rarely helpful text on it. I quite often use Eucatastrophe for the icons rather then text so i'm not kidding when I say that sometimes an Unexpected Courage with extra text on it is perfectly reasonable. Infighting is not one of those cases.

Wonderful card for certain investigators, namely those with decent investigative power and innate resilience.

Top of the list:

Wendy Adams with her high , and ability.

"Ashcan" Pete with his high and ready made soak from Duke.

Minh Thi Phan with great and high enough to really benefit.

Take note that Guiding Spirit only exiles if defeated, I.E killed. If you play over it's ally slot to discard it (for example: your other copy of Guiding Spirit) or it gets discarded by a mythos card, it will not be exiled. High willpower and secondary soaks (Lieutenant Pawterson and Peter Sylvestre ) will basically make it so that your spirits will never go away.

I think it’s worth mentioning that this (along with Hallowed Mirror) are Occult cards, meaning they can be taken by your favorite shaman and mine, Akachi Onyele! Blood-Rite is pretty versatile, the full suite netting you 6 cards over 4 actions (if you value such strict mathematical breakdowns) and can let you pitch cards you don’t need for resources that you probably do and some damage pings to boot.

Not saying it’s an automatic include or anything, but I think it’s got some good applications in her deck.