(Defense reactions can be played from hand or arsenal to defend.)

Decompose - You may banish 2 Earth cards and an action card from your graveyard. If you do, this gets +1[Defense].
Rootbound Carapace (Red) (Promo)
(Defense reactions can be played from hand or arsenal to defend.)Decompose - You may banish 2 Earth cards and an action card from your graveyard. If you do, this gets +1[Defense].
$6.00
Cosmo, Scroll of Ancestral Tapestry (Promo)
Cosmo, Scroll of Ancestral Tapestry (Promo)
During your turn, auras you control with ward are weapons with base POWER equal to their ward and "Once per Turn Action — [1 Resource]: Attack"Your aura attacks with one or more +1POWER counters get go again.
$6.00
Sacred Art: Undercurrent Desires (Promo)
Sacred Art: Undercurrent Desires (Promo)
Legendary (You may only have 1 Sacred Art: Undercurrent Desires in a constructed deck.)If you've played another blue card this turn, choose 3. Otherwise, choose 1;Create a Fang Strike and Slither in your hand.Banish up to 2 cards in an opposing hero's graveyard.Transcend
$6.00
Blessing of Deliverance (Blue) (Promo)
Blessing of Deliverance (Blue) (Promo)
Go again When Blessing of Deliverance enters the arena, if you have a card with cost 3 or greater in your pitch zone, draw a card At the beginning of your action phase, destroy Blessing of Deliverance then reveal the top card of your deck. Gain 1 [Life] for each card with cost 3 or greater revealed this way.
$6.00
Soup Up (Blue) (Promo)
Soup Up (Blue) (Promo)
If an item you control has been destroyed this turn, this gets go again. Galvanize - When this defends, you may destroy an item you control. If you do, this gets +2{d}.
$6.00
Spinning Wheel Kick (Blue) (Promo)
Spinning Wheel Kick (Blue) (Promo)
Combo - If Twin Twisters or Spinning Wheel Kick was the last attack this combat chain, this has +1{p} and "When this hits, put it on the bottom of its owner's deck." Go again
$6.00
Lace with Inertia (Red) (Promo)
Lace with Inertia (Red) (Promo)
Your next arrow attack this turn gains +3{p} and "When this hits a hero, create a Frailty token under their control." Go again
$6.00
Spike with Bloodrot (Red) (Promo)
Spike with Bloodrot (Red) (Promo)
Target attack action card with stealth gains +3{p} and "When this hits a hero, create a Bloodrot Pox token under their control."
$6.00
Herald of Rebirth (Blue) (Promo)
Herald of Rebirth (Blue) (Promo)
If Herald of Rebirh hits, put it into your hero's soul and put up to 1 card with phantasm from your graveyard on top of your deck Phantasm 
$6.00
Inertia // Ponder (Promo) Inertia // Ponder (Promo)
Inertia // Ponder (Promo)
At the beginning of your end phase, destroy Inertia, then put all cards from your hand and arsenal on the bottom of your deck. // At the beginning of your end phase, destroy Ponder and draw a card.
$6.00
Mask of Three Tails (Promo)
Mask of Three Tails (Promo)
Instant -- Destroy this: Draw a card. Activate this ability only if you've hit 3 or more times this combat chain.
$6.00
Prized Galea (Promo)
Prized Galea (Promo)
Kassai Specialization (You may only have this in your deck if your hero is Kassai.) Attack Reaction -- {r}, banish a red and a yellow card from your graveyard, destroy this: Target sword attack gets "When this hits, draw a card." Battleworn (When the combat chain closes, if this defended, put a -1{d} counter on it.)
$6.00
Teklo Leveler (Promo)
Teklo Leveler (Promo)
If you have 1 or more Evos equipped, this gets "Once per Turn Action -- {r}{r}{r}: Attack," 2 or more, this costs {r}{r} less to activate, 3 or more, this gets go again, 4 or more, this gets +1{p}.
$6.00
Teklo Plasma Pistol (Promo)
Teklo Plasma Pistol (Promo)
Action - Remove a steam counter from Teklo Plasma Pistol: Attack Action - [1 Resource]: If there are no steam counters on Teklo Plasma Pistol, put a steam counter on it. Go again
$6.00
Prism, Advent of Thrones (Promo)
Prism, Advent of Thrones (Promo)
Whenever a card with Herald in its name is put into Prism's soul during an action phase, you may search your deck for a figment, put it into the arena, then shuffle. Once per Turn Instant -- {r}{r}, banish a card from Prism's soul: Awaken target figment you control.
$6.00
Fai (Promo)
Fai (Promo)
You may start the game with a Phoenix Flame in your graveyard. Once per Turn Instant - {r}{r}{r}: Return a Phoenix Flame from your graveyard to your hand. This ability costs {r} less for each Draconic chain link you control.
$6.00
Lexi (Promo)
Lexi (Promo)
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 a Lightning card, your next attack this turn gains go again. If it an Ice card, create a Frostbite token under target hero control. Go again
$6.00
Prism  (Promo)
Prism (Promo)
Once per Turn Instant - [2 Resource], banish a card from Prism's soul: Create a Spectral Shield token.
$6.00
Boom Grenade (GEM Pack 2)
Boom Grenade (GEM Pack 2)
Crank This enters the arena with a steam counter. At the start of your turn, destroy this unless you remove a steam counter from it. When a Mechanologist attack action card you control hits a hero, destroy this and deal 4 damage to them.
$6.00
Kunai of Retribution - Left (GEM Pack 1)
Kunai of Retribution - Left (GEM Pack 1)
Once per Turn Action — {r}, destroy this when the combat chain closes: Attack. Go again
$6.00