AoE damage is short for "area of effect" damage. Generally speaking, AoE damage is damage that is dealt to more than a single target. For example, a spell such as Flamestrike deals AoE damag [..]

The term character encompasses both minions and heroes. If an ability deals damage to "all characters", it will damage all minions and all heroes.

Card advantage refers to the situation when one player (the advantaged one) has more cards in their hand than the opponent. Generally speaking, having card advantage is a beneficial state, since it gi [..]

The action of using The Coin, the extra card given to the player who goes second.

In Arena mode, it represents the 90 cards you are able to choose from to create your deck. The process of choosing cards is called drafting.

Drop is another term for "minion". You will hear this often in relation to the cost of the minions, such as "this is one of the best 2-drops in the game" (that is to say, one of th [..]

The early game refers to roughly the first 3-4 turns of a game.

The term enemy refers to characters that do not belong to you. Some abilities are only usable against enemy characters, meaning that they cannot affect your own characters.

A situation where a less expensive or important minion kills a more expensive or more important minion, and dies in the process; see also trading.

The term friendly refers to characters that belong to you. Some abilities are only usable on friendly characters, meaning that you cannot affect enemy characters.