Green Sun's Zenith [Mirrodin Besieged] Troll using their libraries as their

using their libraries as their decks

but you may put it on top of your library instead of into your graveyard

{T}: Counter target activated ability from an artifact source unless that ability's controller pays {W}

The stench in the hovel was overpowering

Green Sun's Zenith [Mirrodin Besieged] Troll using their libraries as theirSet: Mirrodin Besieged Type: Sorcery Rarity: Rare Cost: {X}{G} Search your library for a green creature card with converted mana cost X or less, put it onto the battlefield, then shuffle your library. Shuffle Green Sun's Zenith into its owner's library. As the green sun crowned, Phyrexian prophecies glowed on the Tree of Tales.