To activate this card, you must draw it for your normal draw in your Draw Phase, reveal it, and keep it revealed until Main Phase 1. During that Main Phase: You can activate 1 of these effects;
• Send 1 "Seventh" Normal Spell from your Deck to the GY; this effect becomes that Spell's effect when that card is activated.
• Special Summon up to 2 monsters from your Deck, but negate their effects, then immediately after this effect resolves, Xyz Summon 1 "Number" monster using materials you control, including both those monsters.