Chaotic Dance of Waking Illusions, Mafahl

[AUTO](RC):At the end of the battle this unit boosted, if your soul has ten or more cards, [COST][retire this unit], choose one of your grade 3 or greater vanguards with "Baromagnes" in its card name, and the cost of that unit's original [AUTO] abilities is reduced by [Counter-Blast 1] until end of turn.