You can only use the 1st and 2nd effect of this card’s name each once per turn.
(1) Place 1 “Artmegia the Academy City of Divine Arts” from your Deck or GY face-up in your Field Zone, or, if you control it, you can add 1 “Artmegia” card from your Deck to your hand instead, except “Artmegia Banish – Change”.
(2) When your “Artmegia” monster is targeted for an attack: You can banish this card from your GY; negate that attack, then you can Special Summon 1 “Medius the Innocent” from your hand.