[ACT](VC)[1/turn]:[COST][Retire a rear-guard], choose one of your opponent's rear-guards, retire it, search your deck for up to one card with "Ancient Dragon" in its card name, call it to (RC), shuffle your deck, and that unit gets [Power]+5000 until end of turn.
[AUTO](VC/RC)[1/turn]:When your drive check reveals a [Front] trigger, you may have this unit get [Critical]+1 until end of turn.