Devoting Herself, Reginleif

[AUTO](RC):When this unit boosts a rear-guard with "Adam" in its card name, if your grade 3 or greater vanguard is a unit with "Adam" in its card name or a <Valkyrie>, [COST][Counter-Blast]1], and this unit gets [Power] +5000 until end of turn. At the end of that battle, return that boosted unit to your hand.