Mentor

Mentor:
Cards with Mentor have an additional effect when played if you exhaust one of your units as a Student.

Mentor is a trigger keyword introduced, with its associated keyword Student, in Omens of the Past as the defining mechanic of the Hooru faction.

Find more cards with Mentor in its category page.

Details

Mentor abilities only trigger as card is played, and only if another unit is chosen as a Student. Units that are currently exhausted can't be used as a Student. If a Student isn't selected, or one isn't available, then the Mentor ability has no effect.

The Student keyword does nothing on it's own, and a unit cannot be a Student without being mentored by another card. Student appears without Mentor on some units which gain an additional effect if they are mentored. Currently, three such cards exist: Crownwatch Squire, Highbranch Sentry, and Watcher of the Big Ones.

Notes

Mentor and Student returned in two The Tale of Horus Traver cards, Twinstrike Master and Hooru Teachings.

A unit with EnduranceEndurance:
Readies at the end of your turn, can't be stunned, and can't be exhausted except to pay costs. exhausted as a Student will ready at the start of the opponent's turn.

If a card has two or more Mentor abilities, each will trigger separately and require its own un-exhausted Student. Currently, the only situation where a card can have two Mentor abilities is through the Heroes Rise! and Hero's Welcome events' special rules, by giving a Hero unit with Mentor (such as Nostrix, Lord of Visions) the "Hero's Mentor" upgrade.