Prototype Portal [Scars of Mirrodin] Golem You may cast that card

You may cast that card without paying its mana cost for as long as it remains exiled

When Narcomoeba is put into your graveyard from your library

Sacrifice Thrull Retainer: Regenerate enchanted creature

Set: Arabian Nights Type: Creature — Turtle Rarity: Common Cost: {1}{U} Giant Tortoise gets +0/+3 as long as it's untapped

Prototype Portal [Scars of Mirrodin] Golem You may cast that cardSet: Scars of Mirrodin Type: Artifact Rarity: Rare Cost: {4} Imprint When Prototype Portal enters the battlefield, you may exile an artifact card from your hand. {X}, {T}: Create a token that's a copy of the exiled card. X is the converted mana cost of that card.