Legion

Legion is a Conditional Keyword that can be present on Spells, Units, Rune Abilities, Legend Abilities and Permanent Abilities.

It is formatted as "Legion - [Text]".

It is functionally short for "If you have played another Main Deck card before this one already this turn, apply [Text]."

Legion's conditional can apply to static abilities, activated abilities, spell instructions, or even abilities active in zones outside of the board.

All instances of Legion on cards a player controls are satisfied by that player playing a single card earlier in the same turn.

Legion, and whether or not a card has Legion, is a characteristic of the card and may be checked or referenced by other Game Effects.