Green Sun's Zenith [Mirrodin Besieged] Magic 2013 Promos Set: King's Court Card type:

Set: King's Court Card type: Tuner/Effect monster Rarity: Rare Attack: 0 Defense: 0 Cannot be used as Synchro Material

Set: Legendary Collection 5D's Card type: Effect Monster Rarity: Common Attack: 1200 Defense: 1800 If 2 or more face-up "Blackwing" monsters you control were destroyed this turn

but it explains much

Set: 2014 Mega-Tins Mega Pack Card type: Normal Trap Rarity: Secret Rare When an opponent's monster declares an attack: Target 1 Level 4 or lower monster in your Graveyard

but cannot attack directly

Green Sun's Zenith [Mirrodin Besieged] Magic 2013 Promos Set: King's Court Card type:Set: Mirrodin Besieged Type: Sorcery Rarity: Rare Cost: {X}{G} Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library. As the green sun crowned, Phyrexian prophecies glowed on the Tree of Tales.