Growing Rivalry

Arena inside has a sort of black market NPC at night time where you can pay some height for a hp booster I believe it's called. At the end of day every day it will permenantly boost your hp by 5. If that isn't enough for you then there's succubus decks which have buffs that steal hp from the enemy and whatever hp they steal through those buffs is granted to you as permenant max hp allowing you to gain far more max hp than the hp booster could ever hope to give you. Thanks to succubus decks my character's max hp growth has outpaced all the enemies.

Find the cards with permanent scaling, infinite scaling, or % damage. So for 7.9, that I'm aware of:

GLA: Gladiator's Cunning, Freya The Slayer

FAI: Fairy Fire, Fairy Witch, Fairy Finale

DRK FAI: Augmented Corruption, Dark Fairy Queen (questline)

MACH: A.E.R.A./E.L.U.N.E/Upgrades (questline)

ZOM: Hooded Corpse, Zombie Swordmaiden, Xhelzus The Necrotic, Everlasting Zombie

SUC: Belial The First, Zekari Massacre Specialist (questline)

GAM: Poker Face, Snake Eyes

SPACE: (Elite) Space Force - Athena, (Elite) Space Force - Arabella

GAL: Galactic Hive-Mind (token),  Galactic Size Mage, Galactic Doombringer

DEMON: Demonic Decay, Blood Pact?

PARA: Parasitic Magus, Yogg'Saron Parasitic World Eater

COV: The True Witch (multiple cards), Creeping Miasma

CULT: Ritual of the Goddess (Baal questline)

VORPAL: Izel - Ultimate Warrior, Vorpal cards in general

OTH: Devorah The Insatiable

Atleast in the demo version there's no card that prevents height theft. There are however cards that can steal height. Curse of Belial in succubus decks steals 25 height per turn. Succubus decks are also special in that the hp they steal is granted to you as permenant max hp. 

Although it takes a lot of height sacrifice to set up quickly with the witch elders doubling spell counters at the cost of height you can sacrifice near 2k height to be able to gain 5k height through coven cards. There's a card that conditionally gives you Bellatrix. Bellatrix has a couple different forms and it's the 2nd form that can perform massive height stealing at the cost of sacrificing all your spell counters.

they give a passive effect for the battle.

Arianna in the casino sells them once you beat her in her own game a few times. 

The main aspect is Height. 
Fat Mode will mean her body will grow outwards as well, but the game isn't geared to that specifically. 

I presume mosquitoes are something in the patreon version not released in the current free version. Although I have personally used a parasite deck to gain 20k height in an hour long match I haven't tried taking it further out of fear the that the variable storing the height data might roll over at 32kish. What do the mosquitoes to that make them so bothersome?

I recommend a fairy fire/fairy witch deck. Fairy fire damage will continually climb as the match drags on . Even if the witch's  bleeds and fairy fires can't punch through the boss's healing initially it'll just simply be a matter of time before the fairy fire damage gets too big for the boss to heal through. If you got an absurd height advantage on the boss stomp card will do the trick as well. Fairy witch is just an uncommon and you only need 2 at most for a good deck. This honestly makes it one of the most obtainable Valeria killing worthy decks.

What's most important is that fixed damage cards are basically useless against Valeria since their unmodifiable damage is basically too low to be of any use against her huge healing. What you ultimately need are cards that have their damage grow based on a certain condition and then setting things up for the condition to ultimately have the damage grow to absurdity. Unfortunately Ultimate Dark Fairy Queen and A.E.R.A. aren't allowed the damage Valeria so those 2 easy wins won't work.

Normally you start alliances by chatting with a character when you encounter them normally in the world. They'll ask you a question during the chat and you'll have to answer correctly like a few times before the alliance starts. Also from what I've read if you've already got an alliance you can't start a new one yet.

You will get a special card that replaces the original one. That has no downside

You cannot. 

One of my favored sets for an easy to assemble decently strong deck is fairy. The mere uncommon fairy witch card which brings forth more copies of just fairy fire just simply gets stronger and stronger the longer the match goes on. Then it's just simply a matter of making a small deck so that you can get back to your important cards as quickly as possible (the fairy witch, and whatever draw/healing cards you got set up to help make the deck viable).  Self removing cards help stream line the deck and if you have troubles making the deck go down to no more than 10 cards you can always use gluttunous fairy to help remove the less useful cards permenantly (or just simply sacrifice fairy fires granted by the witches to gain 30 height even).

My suggestion for easy deck building is to stick to 15 card decks. Have some draw more cards cards and focus on having an ultimate hand of no more than 10 cards. The 5 other cards are just filler that either remove themselves from game when used or less powerful cards that you intentionally remove with a card that removes other cards from the game so that your deck size ultimately slims down to no more than 10 so that you can hold all the useful parts parts of your deck in one hand. the draw cards cards are so you can quickly recover your full hand after using multiple cards in a turn.

Hmm. Seems like that bug is still floating around :/ 

I'll pop it on my list.

the same thing happens to many other,like diana and the staffs.

To get her you need to defeat Celestia. Once she admits defeat and leaves, you'll receive Devorah (well the card that adds devorah to your deck for the battle)

hmm, generally it shouldn’t. Does it produce an error as to why it does? 

And it seems also affect my new ally, I can't dissolve allyship with new ally now, the choice disappeared

sadly the Ally system is buggy as all hell. It will most likely be removed / reworked entirely in upcoming updates. 

The book is bought from the girl in the bazaar. Then it’s an item you can use from the menu. 

reply correctly to their questions during talk a few times to initiate things.

not just yet. I’ll add one once most of the bugs are sorted first. 

Same with CG unlocks, cards etc 

Yes. More will come soon :D

Yes. some characters need a higher amount. 
That isn't present in the demo. Please do not look through the game files. 

That's an odd bug. It shouldn't be blocked. 

Yup. That's intended so you don't end in a position where there isn't enough people to attack and use up actions. 

Sadly no. Just the one.