Ability word

An ability word is a word that thematically groups cards with a common functionality, but has no special meaning in the Comprehensive Rules.

Description
Because they indicate flavor rather than rules text, ability words are printed in italics and are separated from their corresponding rules text by an em-dash. Ability words are used to label mechanics that cannot be keyworded.

Ability words were introduced with Unhinged 's gotcha, and were first printed on tournament-legal cards in Saviors of Kamigawa with channel and sweep. Some earlier unnamed mechanics, such as Invasion block's domain, have retroactively received ability words. Odyssey block's threshold was errataed during rules changes in Time Spiral block to be an ability word, rather than a keyword, as was Mirrodin block's imprint with the release of Scars of Mirrodin.

Ability words are distinct from keyword actions and keyword abilities. Collectively, they are described as mechanics.

Rules
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Examples
Examples of ability words are:
 * Metalcraft — {Additional or alternate effect} if you control three or more artifacts.
 * Sweep — Return any number of {basic land types} you control to their owner's hand. {An effect based on the number of lands returned.}

List of ability words
• Adamant

• Addendum

• Battalion

• Bloodrush

• Channel

• Chroma

• Cohort

• Constellation

• Converge

• Council's dilemma

• Delirium

• Domain

• Eminence

• Enrage

• Fateful hour

• Ferocious

• Formidable

• Grandeur

• Hellbent

• Heroic

• Imprint

• Inspired

• Join forces

• Kinship

• Landfall

• Lieutenant

• Magecraft

• Metalcraft

• Morbid

• Parley

• Radiance

• Raid

• Rally

• Revolt

• Spell mastery

• Strive

• Sweep

• Tempting offer

• Threshold

• Underdog

• Undergrowth

• Will of the council