To activate this card, you must draw it for your normal draw in your Draw Phase, reveal it, and keep it revealed until the start of Main Phase 1. At the start of your Main Phase 1 that same turn, you can: Special Summon, from your Extra Deck or GY, 1 "Number" monster that has a number between "101" and "107" in its name, except "Number C" monsters, then Special Summon, from your Extra Deck, 1 "Number C" monster with the same number in its name as the first monster, by using it as material. (The Second Special Summon is treated as an Xyz Summon. Transfer its materials to the Summoned monster.) You can only apply this effect of "Rank-Up-Magic - The Seventh One" once per Duel.