Theorealize Liberation (BLGG-EN129) - Battles of Legend: Glorious Gallery 1st Edition

If you control "Medius the Pure": Add to your hand or Special Summon 1 monster with 300 ATK/200 DEF from your Deck. During your Main Phase: You can banish this card from your GY, then target 1 face-up monster you control; it is treated as a Tuner this turn. You can only use each effect of "Theorealize Liberation" once per turn.