Optional effect

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"Peten the Dark Clown", a card with an optional effect

Optional effects are effects that a player can choose whether or not to activate. Optional effects include the phrase "You can" in their card text.

Missing the timing[edit]

Optional effects that use the word "When" can miss the timing. Optional effects that use other timing words, such as "If", cannot.

Mechanics[edit]

When multiple effects trigger at the same time, they are all placed on a Chain, with the mandatory effects being activated first, followed by the turn player's optional effects and then the non-turn player's optional effects.