Mythical Beast Medusa [SR08-EN009] Common Tournament Pack 8 but when it does so

but when it does so using this effect

Set: Dark Revelation Volume 4 Card type: Fusion/Effect Monster Rarity: Rare Attack: 2100 Defense: 1200 "Elemental HERO Avian" + "Elemental HERO Burstinatrix" Must be Fusion Summoned and cannot be Special Summoned by other ways

until the end of this turn this card''s name is treated as the selected monster''s name

Set: Duelist Alliance Card type: Effect Monster Rarity: Super Rare Attack: 0 Defense: 2000 When this card you control is destroyed by battle or card effect and sent to your Graveyard: You can Special Summon 1 "Yang Zing" monster from your Deck in Attack Position

Set: Ancient Sanctuary Card type: Effect Monster Rarity: Common Attack: 1500 Defense: 1000 This card cannot be attacked if there is another Pyro-Type monster on your side of the field

Mythical Beast Medusa [SR08-EN009] Common Tournament Pack 8 but when it does soSet: Structure Deck: Order of the Spellcasters Card type: Pendulum Effect Monster Rarity: Common Attack: 1500 Defense: 1500 Each time a Spell Card is activated, place 1 Spell Counter on this card when that Spell resolves. Once per turn, during the Battle Phase (Quick Effect): You can remove 2 Spell Counters from your field, then target 1 face up monster on the field; its ATK DEF become half its current ATK DEF until the end of this turn.