Scrying Sliver

Scrying Sliver may be cast from you deck by paying an additional {p/c}{p/c}{p/c}{p/c}{p/c} as it's cast.
All Slivers in players' decks have: "You may cast this card from your deck by paying an additional {p/c}{p/c}{p/c}{p/c}{p/c} as it's cast."
"Not even time could stop the Slivers after the Plaguelord gained control of the Slivers of Domanaria."