Chimeratech Overdragon [DP04-EN013] Rare Synchro/Pendulum/Effect Monster You can only use this

You can only use this effect of "Yosenju Oyam" once per turn

it loses ATK equal to its DEF until the end of this turn

You can only activate 1 "Celestial Observatory" per turn

You can only activate 1 "Iron Draw" per turn

you can activate the effect of that Spell in your GY (even if you no longer control this face-up card)

Chimeratech Overdragon [DP04-EN013] Rare Synchro/Pendulum/Effect Monster You can only use thisSet: Duelist Pack 4: Zane Truesdale Card type: Fusion Effect Monster Rarity: Rare Attack: ? Defense: ? "Cyber Dragon" + 1 or more Machine Type monsters This monster cannot be Special Summoned except by Fusion Summon. When this card is Fusion Summoned, send all other cards you control to the Graveyard. The original ATK and DEF of this card are each 800 x the number of Fusion Material Monsters used for its Fusion Summon. Each turn, this card can attack