Number 17: Leviathan Dragon [GENF-EN039] Ghost Rare 205 put it into its owner's

put it into its owner's hand instead of into that player's graveyard

one can be driven off

you can Special Summon 1 "Jack's Knight" from your Deck

If this card is discarded from the hand to the Graveyard by your opponent's card effect

{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn

Number 17: Leviathan Dragon [GENF-EN039] Ghost Rare 205 put it into its owner'sSet: Generation Force Card type: Xyz Effect Monster Rarity: Ghost Rare Attack: 2000 Defense: 0 2 Level 3 monsters Once per turn: You can detach 1 Xyz Material from this card, this card gains 500 ATK. If this card has no Xyz Materials, it cannot attack your opponent directly.