Ability: A Creature or Relic with Ability cannot attack. Instead, you can click the unit to use the described ability.
Afterlife: Any effects following the Afterlife keyword trigger when the unit dies and before it enters the Void.
Armor: Reduces each instance of damage received by the Armor value.
Backline: Cannot be targeted for attacks as long as there are other valid creatures to attack (a creature with Order or Hidden would not be a valid target).
Blessed: When playing a creature with Blessed from hand you can delve from a list of favor and Sanctum related effects.
Blitz: Able to attack enemy Creatures the turn it enters the battlefield.
Burn: A Creature with Burn X is dealt X damage at the end of its controller's turn.
Character: God or Creature
Confused: Has a 50% chance to not hit the intended character and instead attack another random valid character.
Deadly: Will destroy any Creature with the first 1 damage it deals.
Delve: Choose 1 out of 3 options from a specific list of cards or effects.
Echo: This keyword calls a new creature to your hand, one linked to the card you just played. Cards called by Echo have 1 mana, 1 health, and 1 strength.
Empower: This keyword gives you the option to play your card as it appears, or as a stronger ‘empowered’ version. Empowered cards require more mana to play, but can prove devastating for your opponent.
Face: Dealing damage to the opponent's god.
Flank: Ignore both Frontline and Backline effects if it's not the first attack that turn.
Foresee: Look at the top X cards and pull any of them to the bottom of the deck.
Frenzy: Frenzy effects get activated only If the enemy God has taken damage on your turn.
Friendly: Friendly creatures are creatures you currently control. (creatures you played or stole from your enemy).
Frontline: Must be targeted first for attacks (shielding non-Frontline creatures from danger).
Godblitz: In addition to Blitz this also allows attacking the enemy God the turn it enters the battlefield.
Hidden: Cannot be targeted by the enemy. If the Creature attacks, it loses Hidden. (Importantly, Hidden prevents the enemy from targeting the Hidden Creature with anything, including attacks).
Leech: All damage dealt by this creature heals your God for the same amount. Also known as: Lifelink, Lifesteal.
Obliterate: Destroys a card without sending it to the void, or removing it from the Void if it's already there. Also known as: Exile, Remove from game.
Order: While a creature has stacks of Order, it can’t attack and isn’t a valid target for attacks.
Overkill: When dealing attack damage to an enemy creature any leftover damage is distributed randomly among all other enemy characters.
Protected: Nullifies the first instance of damage dealt to a protected character.
Refresh: Refresh X mana means you refill X amount of mana, up to the amount of unlocked mana you have.
Regen: A Creature with Regen X heals for X at the end of its controller's turn
Roar: Any effects following the Roar: keyword trigger when the Creature or Relic is cast from your hand and before it actually enters the battlefield.
Sleep: A sleeping creature is unable to attack or use its ability. Creatures lose Sleep at the end of their turn.
Spell Boost: Creatures with Spell Boost give bonus damage to spells cast by their controlling player.
Soulless: A Card with Soulless won't appear in the Void after being destroyed or used.
Tempt Fate: This keyword is for the risk-takers out there, providing a comfortable buff, or a chance at more.
Twin Strike: Can attack twice in one turn, but only one attack can target the enemy God.
Ward: Blocks one instance of destroy, transform, sleep or non-attack damage from any opponents source.
Void Creatures and Relics that get destroyed and Spells you play from your hand end up in the Void unless they're obliterated. Various effects let you interact with cards in the void.
Other Commonly Used Terms:
Aggro: A low Mana aggressive deck.
BM: Bad Manner
BWD: Board Wipe Death, a control archetype deck
CDM: Card Draw Magic, a magic archetype deck
CTI: Cutthroat Insight, a card within the game
F2P: Free to Play
LOTD: Land of the Dead, a card within the game
P2W: Pay to Win