Urborg, Tomb of Yawgmoth [Planar Chaos] Urza's Saga Set: Portal Three Kingdoms Type:

Set: Portal Three Kingdoms Type: Sorcery Rarity: Uncommon Cost: {1}{R} Rockslide Ambush deals damage to target creature equal to the number of Mountains you control

Set: Archenemy Schemes Type: Scheme Common Cost: When you set this scheme in motion

its owner shuffles their graveyard into their library

you may search your library for up to three basic land cards

If that spell is countered this way

Urborg, Tomb of Yawgmoth [Planar Chaos] Urza's Saga Set: Portal Three Kingdoms Type:Set: Planar Chaos Type: Legendary Land Rare Cost: Each land is a Swamp in addition to its other land types. "Yawgmoth's corpse is a wound in the universe. His foul blood seeps out, infecting the land with his final curse." Lord Windgrace