Hearthpwn

Wanted to check: does shuffling Bombs count as a mechanic from the past? Not sure if you consider Bomb a keyword or not.

THE CHRONOMANCER CLASS
The Chonomancer class is home to time mages, dragons, tinkerers, timekeepers, steam-punks, scientists, clockwork automatons, temporal monstrosities, and more. They utilize their control over time to defeat their foes or protect themselves. Chronomancers make use of timekeeping artifacts and carefully plan out their actions before taking them—though, if they mess up they can just try again!

Toki is a time-travelling gnome with a knack for bending time and messing with timelines. She's friends with the bronze dragon Chronormu (Chromie). She's a powerful wizard and with her affinity for artifacts, she plans on finding the keys to her future. She fears for a dreaded day in the coming years and will do anything to stop it from happening. This passion combined with her recklessness can drop her into some sticky situations.

THE HERO POWER
Inspired by the Temporal Loop hero power from the Monster Hunt game mode. Alter Time defines your last action to be your last input into the game this turn. That is, the last card you played or the last attack you made. If it is the start of your turn and you have not played any cards or made any attacks, Alter Time will rewind to the draw at the start of your turn allowing you the opportunity of drawing a different card for the start of your turn. The game state is completely reset, including but, not limited to, damage, triggered abilities, cards drawn, cards in deck, secrets triggered, etc. Your deck is random and as such a card you draw before Alter Time may not be the same as a card you draw after, unless the order was predetermined with something like Sightless Watcher.

With the introduction of Tradeable, Alter Time will include the use of a Tradeable card's ability as an action. This will result in the card drawn returning to your deck and the Tradeable card returning to your hand.

NOTE: Alter Time does not affect the actual time in each turn. Turns still take as much as time as normal, only the game state is reset.

If upgraded with Justicar Trueheart or Baku the Mooneater, Alter Time becomes Break Time. Here you will be able to use your hero power twice each turn for only two mana total.

STRENGTHS

Prolonging the Game. Plenty of control tools for dominating the end game.
Speeding up the Game. Can shorten the amount of time in each turn.  Close out games with fast minions.
Varied Removal. Unique removal for unique situations. Often bypasses Deathrattles.
Taunt. Focus on protecting your life total and important minions.

WEAKNESSES

Fast, small minions. Low curve decks may sneak through before Chronomancers have enough time to stabilize.
Minionless decks. Not great at interacting  with non-minions. 
Enemy chronomancers. Shortening your turn can get messy when your opponent also shortens your turn.
Weapon removal. Without artifacts, chronomancers tend to lose track of time.
Big minions. Chronomancer minions line up poorly against bigger minions.

SHOWCASE CARDS

LUCKY POCKET WATCH
Chronomancers love their timekeeping artifacts. They are represented as 0-Attack Weapons with their Durability representing the duration of time. Throughout the class you will find cards that care about Weapon Durability. Lucky Pocket Watch encourages you to slow down the game to maximize your other cards. Note that this class does not really use Weapons offensively, so have no fear of Weapon augmentations.

TEMPORAL ANOMALY
Although Chronomancers lean toward controlling the battle, there is some support for lower-curve or aggressive playstyles. Temporal Anomaly plays a big part in these decks, offering immediate power at the cost of future time. In certain decks, Temporal Anomaly fills the role of triggering the rope sooner for cards like...

RUN THE CLOCK 
Chronomancers love taking their sweet, sweet time. Run the Clock lets you draw 3 cards for only 4 mana... if you have the time for it. Typically, you are incentivized to play your cards that draw cards early in your turn to best maximize your options. Here, you'll have much less time to make use of the drawn cards and finalize your turn, so play smart. Note that you can still cast this card when the rope is not burning. Control decks may fancy this play as away to create hand-space while preserving deck size in fatigue mirrors.

REST OF BASIC SET

CHALLENGE BREAKDOWN

I've been working on this class for a few years, originally wanting to submit it for a prior design competition on here. Never got around to it back then, but hoping I can make it through a few rounds this time. Looking forward to everything!