Earthwalker - A champion or ally with the earthwalking ability can travel under the ground to attack any realm in a player's formation. Earthwalkers cannot attack realms that specifically state that they are immune to Earthwalkers, or that Earthwalkers cannot attack. Earthwalkers cannot attack realms that specify that only other types of champions may attack (such as "Can only be attacked by clerics" or "Can only be attacked by flyers or swimmers"). The ability to Earthwalk is not granted to allies unless it specifically states so in the Earthwalker's card. A flyer cannot choose to not fly. A swimmer cannot choose to not swim. An earthwalker cannot choose to not earthwalk. In situations where a champion or ally has several types of movement, the champion can choose which type of movement to use. For example, if a champion becomes a flyer and earthwalker, they can choose how to move. The statement 'earthwalkers cannot attack' does not restrict the champion from flying to that realm, and 'only earthwalkers can attack' does not mean that the flying ability makes the champion unable to attack.

NPC - Non-Player Character (NPC) might attack you first. Win the battle against NPC before fighting the opponent.

Vampire - Vampires are a special kind of champion or ally, designated in a card's text box. Not all Vampires are "Undead". Unless the card says "undead", it is not undead, even if the picture or name of the card seems to indicate otherwise. Many vampires are monster champions, though they can be of any type.