Kelpie Rider, Mitros (G-CB02/035EN)

[AUTO]: Forerunner (When a unit of the same clan rides this unit, you may call this unit to (RC)) [AUTO](RC) Generation Break 1 Wave-3rd time or more (This ability is active during the specified battles of each turn) :[Put this unit into your soul] When your vanguard attacks, if you have a grade 3 or greater vanguard with "Thavas" in its card name, you may pay the cost. If you do, search your deck for up to one grade 3 card with "Thavas" in its card name, call it to (RC), shuffle your deck, and at the end of that turn, return that unit to your hand.