Huge congrats for the creativity and effort you put in it!
Besides a couple of cards that lools too good its pretty well balanced. But I dont like the good amount of random pings
Fanmade Expansion: Aestarian Legacy
ok, ima gonna drop a hot take on the abyss cards:
Hellish conductor
High risk high reward, but does seem a bit toooo suicidal.
Tortured Occultist
Would be a great card if it was a defensive statline, but might work in some tempo deck with emp
Madness Incarnate
Interesting creep finisher, essentially doubling the attack of an Abyssal Juggernaut.
Sadistic Valtz
Really REALLY good Xor support, fits into every general(might even in every deck), cuz it is a fantastic removal option for early game.
Corpse Grinder
Xor finisher. If it works like i think, might create infinite damage loops with Sarlacs/Gors.
Haunted Mansion
Either REALLY op or unplayable
Wicked Manifestation
My favorite card in this expo for Abyssian. Works for Maehv and Swarm and is all around useful.
Fiendish Airship
Now THIS, I am offended with. It is the weakest demon, that can come from Gate, and his effect is really bad, cuz horrors are also 6 mana 6/6. I suggest it being Dying wish:Add 2 horrors with flying, or he reduces the horror cost to 3 or 4 mana, so you dont brick your hand.
Infernal Bargain
Honestly, 0pp card draw is already op, and this can pull opponents good cards. Top tier, might need a mana adjustment.
The Undertaker
Really creative idea, synergises greatly with powerful Deathwatch cards(BM priestess, Shadowdancer, the upcoming legendaries i will talk about) as well as with easy swarm cards like Wicked Manifestation .
Instigator Malephar
A Variax level finisher, whose effect can help you finish a game with rush(Saberspine+Saberspine or Saberspine+Unbirth). Works really well with all the Self damage cards and Undertaker specifically. Would definitely craft if just for the memes.
Graveyard Polluter
Interesting statline, the Relinquish effect seems like a worse shadow nova for a bigger cost, would either bump up the amount of creep produced or give it another immediate effect(have all creep deal its tick for example). The effect is insanely good, might tone it down to 2 damage. This card inspires Nocturne creep, me like.
Treacherous feast
First thing that comes in mind is Intensify. But then there are powerful LW that can be triggered, as well as Sarlac duplication. And it progresses Xor. Me likey.
Thanks! I agree that there’s too many RNG in these cards, but I can’t think of a more elegant way. I’ll try to think of something better and minimize the randomness.
It’s primarily a filler card. I reckoned it has value as it is the only Demon that buffs your hand size. Also, while it isn’t meant to be too strong, a 6 mana 6/6 with Flying doesn’t sound half bad either. Maybe I can make the card reduce the cost of the Horror by 1 or 2?
Certainly doesnt, but there is a difference between increasing hand size and straight up bricking. I do appreciate that you thought of pack fillers(they are needed imo), but as a gate memer i want to cry 
I’ll try to find ways to buff it. But all in all, the card isn’t filler in terms of flavor. It took effort to match the effect with the name.
What would happen if this is “overdrawn”? It still takes effect (ie 2 damage) or is instantly discarded and ignored?
It would be activated, as it still counts as drawing a card even if the card is overdrawn and burned.
Hey, I remember some of those cards!
Nice job here!
Does the 9mana lyonar legend give itself rush when summoned?
Blizzard Deerstalker looks a little bit odd in my opinion, it should spawn snowchasers on the field instead of action bar to be useful.
Thanks! And yes, I reused some old ideas because I got lazy. 
Nope. It’s similar to how Xenkai Cannoneer doesn’t give itself Rush.
That was actually the initial idea, but I thought it would be too strong. I feel like adding Snowchasers to your hand is already really strong, especially with cards like Glacial Elemental and Animus Plate.
Damn, some of these cards are awesome. I love some of the grow synergy you added to Magmar. Thanks for sharing 
Btw, I think this is my favorite card: Reptilian Rampage. This would make Vaath so scary lol.
Thanks! And yes, Rampage indeed is scary.
Looks like you really are pushing for self-harm Abyssian to be a thing. We just need to add an artifact that nullifies damage on your turn called Maehv’s Redemption and the archetype will be complete 
Maehv’s Redemption is a super cool name. I should’ve added a card like that but I was too stupid. 
Needs this enabler:
Triple Ping - 3(?) mana
Deal 1 damage to a unit, deal 1 damage to it at the beginning of the next turn, deal 1 damage to it at the start of your next turn.
Grow your sworn Avengers and Proc your Releasers EZPZ while still being a generically useful removal tool that also counters enemy artifacts.
Yet another good idea that slipped through my head. 
Bump. I have more shit coming.
What are you, a Vet player?
Well, yes.