Hi, I love this mod and all the work you've put into it, but I would like to leave some feedback on things that possibly need tweaking:

-Lychee nut being a rare relic is a pain in the ass, similar to dead branch and twisted spoon: you pick them up without thinking, then immediately regret it as it actually disrupts your deck in some way. Maybe make it a boss/shop relic?

-Burning sword's wording confused me slightly: I assumed the burn would only be added on the 1st attack of the combat, maybe " ... you play each turn"? This would prevent any further confusion.

-Burning sword, due to the burn being given each turn, is impossible to play with without medical kit (and then you accidentally toss in bent spoon to make it a wasted play RIP), or a different consistent source of exhausting cards, (e.g.:cycling true grits/burning pact), and critical makes it seem more viable in other decks (such as stregnth), than in an exhaust deck.

-Magic flask/shards: from the name of this mod, I assume it's based around infinite runs, so these relics make sense. However, what i've noticed from my OTK infinite runs is that the main run-enders are due to the enemies out-scaling you and surviving long enough to put you in the floor. These relics take away your only loss condition, especially in something like a strength deck, by giving you rediculous scaling power or healing with no downside (even tho by this point you have nothing to do but rest/dig/toke a curse). If the biggest problem is "starting up" these relics, then an OTK deck bypasses that by going through multiple loops without needeing their buffs, then when they do need them, they've already scaled too much for the enemies to handle.

-Cursed dice: if you have ruinic pyramid and keep 1 card in hand, you cannot die. Playing any kind of draw card when you run out of cards in deck resets your "death timer", once again making it near impossible for you to die. Pretty much, in combination with a couple of other cards/relics, this thing becomes "if you would die, autowin and heal 35% max hp". This is too op for a even a rare relic, may I suggest making it an event relic? This is the only real way to up the rarity past rare.

-Bottled mercury: this card is incredibly unstable and clearly isn't working as you intended it to. Idk, if you already know about this, but I'll put it here anyway. When picked up, works as intended, stick to a card and triggers it's buff. On reloading the game, the bottle has a chance to un-attach itself, and there's no easy way to re-assign it (like all bottles). It also has a seperate chance to bug out when removing cards after reloading: it can attach itself to the card you're trying to remove (only noticed in shops so far, happens for both attacks and curses), keeping it in your deck. This can lead to multiple cards bottled, and curses bottled (if the curse is playable, doesn't crash the game, thankfully). The same issues haven't been seen with the spirit in a bottle, so maybe comparing their coding could help solve this issue.

-What's a virus? The "virus" card references "a random virus", yet there's nothing anywhere I can see (apart from that card) that is also a virus. Doesn't this make it more of a negative card than good, if you're just adding more and more of the same, useless card to your deck? If more viruses are going to be added in the future, shouldn't this card be unobtainable until then?

I hope this feedback helps improve the mod, other people are welcome to chime in with their own opinions/confirmations, thanks for reading! ^^

(TL;DR: some things need balancing, some things can be exploited/don't work as intended and what's a virus? Please see each sections for more detail.)