Portail prototype (FR Prototype Portal)

Artefact    (CMC:4)

Empreinte — Quand le Portail prototype arrive sur le champ de bataille, vous pouvez exiler une carte d'artefact de votre main. , : Mettez sur le champ de bataille un jeton qui est une copie de la carte exilée. X est le coût converti de mana de cette carte.

195 SOM • FRDrew Baker — watermark: Mirran

™ & © 1993—2010 Wizards of the Coast

Notes: TODO: Update Copyright

Legal in: Modern,Extended,Scars of Mirrodin Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Classic,Singleton 100,Commander

Oracle Text (click to copy):

Prototype Portal {4} Artifact Imprint — When Prototype Portal enters the battlefield, you may exile an artifact card from your hand. {X}, {T}: Put a token that's a copy of the exiled card onto the battlefield. X is the converted mana cost of that card.

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View this MTG card on Gatherer

1/1/2011
If Prototype Portal has left the battlefield by the time its second ability resolves, you'll still put a token onto the battlefield that's a copy of the exiled card. On the other hand, if Prototype Portal is still on the battlefield at this time but there is no exiled card (because, perhaps, Riftsweeper's ability caused the exiled card to be put into its owner's library), no token is created.
1/1/2011
You don't choose the value of . Rather, the value of X is defined by the activated ability.
1/1/2011
If the exiled card has  in its mana cost (such as Chalice of the Void), that X is considered to be 0. The  in Prototype Portal's activation cost takes this into account, though it may be greater than 0 if the exiled card has other mana symbols in its mana cost (such as Riptide Replicator).
1/1/2011
You may not activate the second ability if no card has been exiled with Prototype Portal. In that case, the value of  is undefined and can't be paid.
1/1/2011
Any enters-the-battlefield abilities of the exiled card will trigger when the token is put onto the battlefield. Any "as [this permanent] enters the battlefield" or "[this permanent] enters the battlefield with" abilities of the exiled card will also work.

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Card Prototype Portal is not on TCGPlayer.