Spenta, the Magistus Sealer [BPRO-EN098] Secret Rare

You can discard this card, then activate 1 of these effects;
• Add 1 "Magistus" monster from your Deck to your hand, except "Spenta, the Magistus Sealer".
• Halve the ATK of 1 monster your opponent controls until the end of this turn.
You can banish this card from your GY, then target 1 face-up monster you control; equip 1 "Magistus" monster from your Extra Deck or GY to it as an Equip Spell. You can only use each effect of "Spenta, the Magistus Sealer" once per turn.