Generally, all the cards in Alteil can be divided into three types. Units, Characters and Grimoires.
Unit Cards
These are the main cards used in the game, these are the cards you put on the field in order to carry out combat and other actions.
Character Cards
These act like units, but they have special abilities that Unit Cards lack. In return for their power, there are restrictions. Only one copy of a Character can be out on either player's field at any one time. This includes closed copies, so be careful!
Grimoire Cards
These work like simple magic cards. They take effect the moment they are put into play, and then they are discarded from the game. They never go out into the field.Statistics
Each card's statistics is made up of a number of parameters that work similar to the stats in other RPG games.Sphere of Influence
Literally, this is the Sphere image you see in the lower left of the card art. Yellow denotes Refess, purple denotes Lawtia, Red denotes Gowen, and blue denotes Falkow.Card Skills
There are also times, depending on the card, when special abilities called Skills come into play. It is also possible for cards to have multiple skills.Open Skill
Activates the moment a card is first revealed to the opponent. A Grimoire is a card with an Open Skill that automatically discards itself after the skill goes off. Units can also have Open Skills, but after they go off they can be put into play as normal.Start Skill
Activates at the beginning of the Action Phase, before any actions are taken. Start Skills activate in order of AGI.Rank Up Skill
These skills are generally only available to Gowen Units. If your Gowen Sphere level increases to match or exceed the level requirement for a Unit's Rank Up, that Unit will get an enhancement to their offensive or defensive abilities.Auto Skill
Activates automatically when it is the Unit's turn to act, right before when the Action Menu pops up.