mechanologist

Dash, Inventor Extraordinaire

You may start the game with a Mechanologist item with cost [2 Resource] or less in the arena. (It is considered to have entered the arena.)

ninja

Katsu, the Wanderer

The first time an attack action card you control hits each turn, you may discard a card with cost 0. If you do, search your deck for a card with combo, banish it face up, then shuffle your deck. You may play it this turn.

ranger

Lexi, Livewire

Essence of Ice and Lightning (You may have Ice and Lightning cards in your deck.)

Once per Turn Action - Turn a face down card in your arsenal face up: If it's a Lightning card, your next attack this turn gains go again. If it's an Ice card, create a Frostbite token under target hero's control. Go again

warrior

Dorinthea Ironsong

Once per Turn Effect - When your weapon attack hits, you may attack an additional time with that weapon this turn. (You must have an action point to attack an additional time.)

runeblade

Vynnset, Iron Maiden

At the start of your turn, banish a card from your hand. If you do, create a Runechant token.
Whenever you play a Shadow non-attack action card, you may pay {g}. If you do, the next Runechant effect that would deal damage this turn can't be prevented.

illusionist

Dromai, Ash Artist

Whenever you pitch a red card, create an Ash token. (A red card is a card with a red color strip.)

If you've played a red card this turn, dragons you control have go again while attacking. (If an attacking dragon dies before chain link resolution, you don't go again.) 

guardian

Bravo, Showstopper

Action - [2 Resource]: Until end of turn, your attack action cards with cost 3 or greater gain dominate. Go again (The defending hero can't defend the attack with more than 1 card from their hand.)

assassin

Uzuri, Switchblade

Once per Turn Attack Reaction -- Banish a card from your hand face down: Turn the card banished this way face up. If it's an attack action card with cost 2 or less, put target attacking card with stealth from the active chain link on the bottom of its owner's deck, then put the banished card onto the active chain link as the attacking card.

brute

Rhinar, Reckless Rampage

Whenever you discard a card with 6 or more [Power] during your action phase, intimidate. (Target hero banishes face down a random card from their hand. At the beginning of the end phase, return all cards banished this way to their owners hand.)

wizard

Iyslander, Stormbind

Essence of Ice (You may have Ice cards in your deck.)

If it's not your turn, you may play blue 'non-attack' action cards from your arsenal as though they were an instant.

Whenever you play an Ice card during an opponent's turn, create a Frostbite token under their control.

shapeshifter

Shiyana, Diamond Gemini

You may have specialization cards of any hero in your deck.

At the beginning of your action phase, Shiyana becomes a copy of target hero until the start of your next turn, and gains "Cards you own are the class of your hero in addition to their other class types."

merchant

Genis Wotchuneed

Once per Turn Action - [2 Resource]: Each other hero may put a card from their hand on the bottom of their deck. If they do, they draw a card and you create a Silver token. If you gain no Silver this way, draw a card. Go again

bard

Melody, Sing-along

Whenever you play a song, create Copper tokens equal to the number of other heroes in the game.

Class Staples