Target 1 Rank 5 or higher Xyz Monster you control; Special Summon from your Extra Deck, 1 "Number C" or "CXyz" monster that is 1 Rank higher than that monster you control, by using that target as material. (This is treated as an Xyz Summon. Transfer its materials to the Summoned monster.) When a Rank 5 or higher Xyz Monster(s) is Special Summoned to your field while this card is in your GY (except during the Damage Step): You can add this card to your hand. You can only use this effect of "Rank-Up-Magic Argent Chaos Force" once per Duel.