Green Sun's Zenith [Mirrodin Besieged] XY183 they lose all hero card

they lose all hero card effects and activated abilities until the end of their next turn

Set: McDonald's Promos: 2015 Collection Type: Fairy Rarity: Promo Retreat cost: Colorless

Set: Sun & Moon: Crimson Invasion Type: Colorless Rarity: Secret Rare Retreat cost: Colorless

where X is that spell's converted mana cost

Green Sun's Zenith [Mirrodin Besieged] XY183 they lose all hero cardSet: 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.