Endymion, the Crescent Magistus

“2 monsters, including a Level 4 Spellcaster monster If this card is Link Summoned: You can target 1 "Magistus" monster you control; equip it with 1 Spellcaster monster from your GY or banishment as an Equip Spell. During the Main Phase (Quick Effect): You can target 1 Spellcaster Monster Card in your Spell & Trap Zone treated as an Equip Spell; return it to the hand. You can only use 1 "Endymion, the Crescent Magistus" effect per turn, and only once that turn.”