Silent-Blade Oni [Planechase 2012] Magic 2012 A true reflection of nature:

A true reflection of nature: death fostering life

you may put Nether Shadow onto the battlefield

As the green sun crowned

if you control seven or more lands

Silent-Blade Oni [Planechase 2012] Magic 2012 A true reflection of nature:Set: Planechase 2012 Type: Creature Demon Ninja Rarity: Rare Cost: {3}{U}{U}{B}{B} Ninjutsu {4}{U}{B} ({4}{U}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Silent Blade Oni deals combat damage to a player, look at that player's hand. You may cast a spell from among those cards without paying its mana cost.