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== Mana Field ==
[[File: Blood token.png|x200px200px|right]]
Introduced by [[PMA]], but now widely used, {{Ability|Mana Field}} supports {{Ability|trigger}} their effects when any gem on the [[Gem board]] is matched adjacent or diagonally adjacent to the support.
{{Ability|Blood}} is a {{Ability|token}} support created by other cards or Planeswalker abilities. When a gem in its Mana Field is matched, it loses a shield, and then {{Ability|Discard|Discards}} a card and Draws a card.
== Event supports ==
Event supports are a means of varying the gameplay with special rules, abilities, restrictions.. They are always invulnerable to having their shields reduced by matching, either by being {{Ability|Resilient}}, and always getting their shields back, or by having infinite shields. Almost all are also invulnerable to destruction by cards and Planeswalker abilities. An exception is the Atogatog support in the [[Seize the Day]].
=== Day and Night===
[[File:Day support.png|200px|right]]
Day and Night supports are like [[#Event supports|Event supports]] in that they are invulnerable (Day and Night cannot be destroyed by any means), automatically added to the [[gem board]], and add special effects to gameplay.
The Day support is always added first: whenever a {{Ability|Transform}} card (that can change back; {{Ability|Disturb}} cards can only Transform into their flip side) is {{Ability|Summon|Summoned}}, or when [[Arlinn, the Pack's Hope]] begins the game, or when [[Teferi, Who Slows the Sunset]] or [[Arlinn Kord]] use their abilities.
[[File: Night support.png|200px|right]]
A {{Ability|Daybound}} card Transforms to its {{Ability|Nightbound}} side if played at Night, or at the end of any player's turn during which no cards were {{Ability|cast}} (which is what makes it become Night).
Anytime it is Night, and a player casts two or more cards during their turn, it becomes Day at the end of that turn.
Either of these changes, from Day to Night or vice versa, trigger {{Ability|Dayshift}} cards, and one of the support cards is replaced by the other.
== Void gems ==
