Hearthpwn

Boons: 1. You may showcase a 4th card + 3. You can bring back an old cycle from a past expansion = 3 points

Banes: 1. You must showcase at least two common cards + 2. Only three cards in your pre-core set can have four lines of text + 3. No Taunt in your pre-core set = 3 Points

I showcased 4 cards of different rarities. I made a Portal card, a cycle from One Night in Karazan. Only Doc's Time Capsule and Forward Momentum have four lines of text. None of my cards have Taunt.

I followed the rarity distribution of Ashes of Outland for the Demon Hunter as that's the closest comparison I found for the Boomsday Project.

Dimension Shifter - "How did you manage to build something that works no matter which way you turn it ?"

Racing Clock - "I always put a timer on tasks, otherwise I get sidetracked too easily."

Acceler-O-Bot - "How fast can this thing go ? Depends which way it's going in time."

Forward Momentum - "Let's get the ball rolling !"

Future Researcher - "Science is all about finding new things we don't understand yet. Timetravel is just a super efficient way of doing that !"

Like Clockwork - "Why did I forget to put a snooze button on these bots ? I just need five more minutes..."

The Doc - "This guy exists in every reality I've been to, but he always has a different face !"

Time Saver - "Automation is such a blessing. Do it right once, then watch the little guy do it again the next 1000 times."

Gnomeregan Portal - "I've been trying to explain general relativity for ages. Finally, a people that understand's English !"

Turn Back Time - "At some point, it becomes easier to go back rather than deal with the mess."

Your legendaries are really cool ! Not sure how easy/hard the quest is, I would go back to all your sets and looks at how common shuffling is. Adding 1 or 2 more synergy cards for this quest would also be a good direction.

Ankhaten Hotspot is weird to me. Summoning creatures doesn't seem like a sickness kinda thing. Plague of Plagues is underwhelming design imo. It has this sense of a master-plague but it also feels like you couldn't think of anything cooler. Oasis Corrupter is broken 'cause you can't discover on your opponent's turn so it can't be a Deathrattle.

Overall, your Deathrattle theme is great, keep it going.

Your set is a little all over the place. Expansion sets tend to be more focused on a mechanic or playstyle. Dragon synergies with Formation sounds like a plan to me.

First Dwarven Dragonrider seems more straightforward to me. For Korialstrasz I'm not sure... The first version might be cool if you do go the Formation route but I'm not a super fan of the transformation thing, doesn't feel like your class. The second one is too similar to Alex I think.

I can't stress enough how much I love Scholomance Academy !

Pretty cool theme for your Priest cards. The trendsetter should be the one that wants to get targeted, no ? (in terms of flavor) Totems seem to make sense for your class, maybe put more emphasis on Kin.

Since Timekeeper Kairoz was 5 mana last week, I didn't have to fulfill the first challenge.

Time Dilation fulfills the second challenge.

Innovative Chronicler - What's my source ? Just trust me, I went there.

Alternate Timeline - Alright, that's enough, let's just start over.

Time and Place - Nope, I don't wanna deal with that this turn.

Forward Thinker - Sometimes it can be really useful to know what you're doing.

Scaled Menace - It's the kind of problem that you swear you're gonna get to eventually. And then it becomes worse...

Take Your Time - Bruh chill ! I don't know why you in a big time rush.

Patient Matriarch - Oh she can wait all day, but she'd also like it better if it was, like, now, you know ?

Desperate Times fulfills the first challenge.

Eternal Dragon fulfills the second challenge with the Hatchling mechanic from Journey to Un'Goro.

The Chronomancer's first expansion will be The Boomsday Project.

Twin Paradox - These two could never get along.

Traveler of the Sands - One tourist traveling the timeways is fine, it's when they start pilling up that it becomes a problem.

Eager Inventor - So many ideas ! I need to start building now !

Eternal Dragon - 'But I already killed you !' -Frequent last words.

Fleeting Power - I can give you immense power ! For a time...

Time Keeper Kairoz - I'm sure his obsession with fixing the future will never become a problem.

Desperate Times - Let's just delete this timeline and forget it ever existed.

Endure seems a little dicey to me, since a player might have to sink a lot of resources into keeping their minions alive. In a game like Hearthstone with basically no reactivity (i.e. you can't play cards on your opponent's turn), It's really hard to make sure that your stuff stays alive, especially as the game progresses. Maybe you could instead have a keyword that protects minions by reducing damage or making them hard to target (things along the lines of Divine Shield and Stealth). If you really want to keep Endure as it is, I'd suggest pairing it with such keywords and effects, as well as stat buffs.

I think Halt Intruders! should cost 3, maybe 4 since in Hearthstone most enemy minions will have attacked last turn (except the ones that were just summoned and don't have Rush or Charge basically). Tol'vir Suppressor is fine as it is, but I think you can make it more thematic with attack reduction or Silence. The way Energized Bulwark is worded makes me think that it deals several instances of 1 damage (like Arcane Missile) but your description might mean it's just one big removal. For the latter, I would word it as "Then, deal damage equal to its Armor to a random enemy minion".

Shield Wall Protocol is fine but I would honestly just say "all friendly minions" for simplicity. Earthrager's Axe seems interesting but board size restriction is a frustrating mechanic. I would give the Earth Spike some kind of text like maybe "When you summon a minion, destroy this and deal 1 damage to it." to make it more of a dynamic removal/disruption tool. Flame Warden's payoff is a condition on a condition... I'm not a fan.

Eternal Protectors seems a little complicated and fiddly to me. I think you should pocket this for Uldum and make it work with Reborn instead.

Ammunae is great but I think it would be cleaner as "Whenever this minion gains Armor, summon a 2/1 ith Rush". Again it's a much simpler way of going about it imo.

Pirates are fun ! I think Catelyn is in a weird spot. I would remove the Tribute part because that undermines the whole 'fast' feel you want to get. That being said,this paly on turn 4 is extremely powerful for an aggressive deck full of pirates. I would bump it to 5 or 6 so it's more of a finisher. Also maybe give it Rush just so it's clear that she gets it. Would love to see more.

I think you can use the Plague mechanic of cards that upgrade each turn but not the Plagues themselves. Also you might want to use a different flavor. Nethrandamus uses the Spellstone mechanic but not their flavor so maybe follow that lead.

Also thanks a TONE for that visual you made ! Can I use it in my submissions to explain how Tick-Tock might look like in-game ? I'll credit you of course.

Yara and Balgruf are *chef's kiss* for your class ! I'm guessing that they keep their stats and buffs when they fuse, right ?

Rival Sibling sounds amazing but the wording doesn't work. Maybe something like "for each Heritage this has, summon a Rival Sibling with that Heritage". For your past expansion mechanic, you might want to look into unique dragon synergies. Think Wing Commander.

Egg Clutch is a little complexe imo. Does the attack even happen if the welp kills the target ? Protective Mother should get Swamp King Dread's wording. Could be your challenge epic btw.

In think Discover Your Origin should cost less. You'll still have to pay for the Heritages and the Dragon so 1 mana seems fair. Same thing for Dragon Claws, give it more Attack or make it cost less.