In solo it wasn't bad to include a couple of these in a deck for Rita Young and the like, even though she can't really recur it outside of Resourceful etc. But with the advent of Crafty, I can see an argument being made for having this in hand as a starting supplemental 'weapon' by some survivors even in multiplayer. I'm using it with Rita Young in a 3-player right now, and having 1 Crafty - or even better, 2 - to both pay for the play of this card and amp up your Fight to as high as +6 means you can take out monsters with that little bit extra. Even the Clover Club Pit Boss can be a challenge if you're Rita as main monster manager. Elite so can't Waylay, so use a Cheap Shot for 2 damage and you've got 2 left to go. Fighting 3 on 3 doesn't set the world on fire. But use the Gravedigger's Shovel with Crafty and you can rock out two actions of 3+2+1 = 6 v 3, beating the Cultist on Standard.
Not the best weapon, but still a fun one when Rita can deal 1 Damage with a standard evade and a very reliable 1 Damage with the Shovel.

What makes heal decks more viable now is not cards such as Soul Sanctification but Vincent Lee the investigator's deckbuilding options. Because he can use any cards 0-5 that can heal, he has a wide and versatile library of deckbuilding options that was hitherto unavaiable for any investigator. Runic Axe becomes monstrous with him, and he can be a very effective fighter even as a primary cluever.

What gimps this card for me is that it only applies to excess heals for investigators, not allies. There are actually less cards in the game that heal investigators specifically rather than allies. I know another reviewer mentioned a combo with Daisy involving Earthly Serenity. However, I don't think Daisy wants to spend her time building up a stockpile of Unexpected Courages that she can use twice per test. As a Seeker with an investigator ability that synergizes with Tomes, she has a lot more interesting and powerful options than spending time with Earthly Serenity. The build is viable, but it doesn't sound optimal and more of a way to utilize a new and fiddly card.

What makes heal decks more viable now is not this card but Vincent Lee the investigator's deckbuilding options. Because he can use any cards 0-5 that can heal, he has a wide and versatile library of deckbuilding options. Runic Axe becomes monstrous with him, and he can be a very effective fighter even as a primary cluever.

arkhamdb.com

Overpowered in a Vincent Lee recursion deck with the combo piece Bandages + Well-Maintained + Spirit of Humanity. Endless recursion of Bandages, fill the bag up with 10 Blessed Tokens with Spirit of Humanity. This also procs Vincent's ability, giving you endless On the Mend (Unexpected Courage). You'll need someway to offset the horror damage, though.

One of the best, if not the most versatile customisable card in the set for support investigators. By itself, it's: pay a card and an action to give you +1 to a relevant stat for your next 8+ actions, which is a more than decent value for a level 0 card. But things go crazy if you combo the different mods together later on:

If you play with highly specialized investigators (5 in one stats, below average in the rest), you can permanently give them a +2 against the mythos with "Shifting ink, Subtle Depiction, Vibrancy, Eldritch ink (2)". You choose mind + foot as selected skill. Round start: they have some treacheries involving tests with those two stats, and when their turn start, they just use the Subtle Depiction effect and ignore the negative effects on fist and book. Since they never consume their charge, the asset is basically permanent. Or if they have to pass a specific test during their turn, they can still keep the +2 and apply -1 to their main stats to do whatever they want to do.

Else, if you play with flex characters (generally survivor & rogues who hit between 4 & 6), you can still give them +1 to fist + book & use Macabre depiction, so they are virtually have an endless supply of charge, as long as they draw one symbol a turn. And that +1 is often the difference for those flex characters to reliably pass any tests they get.

Imbued Ink is the only mod you'll probably never take, except for Akachi if you plan to instantly discard it for 6 resources. Body assets are rare and not often that useful late in the campaign, since they are too comboish, or cost too much for what they bring. However, arcane assets tend to be more relevant no matter your class for the last few scenarios.

At worse, it's a 0 cost asset that is a fodder against bad treacheries & investigators' ability (dexter). Give it a shot.