Sakashima's Student [Planechase 2012] League Tokens 2012 sacrifice Koskun Falls unless you

sacrifice Koskun Falls unless you tap an untapped creature you control

Set: Mercadian Masques Type: Land Rarity: Common Sandstone Needle enters the battlefield tapped with two depletion counters on it

or triggered ability

Cursed Scroll deals 2 damage to any target

Set: Black & White: Black Star Promos Type: Fire Rarity: Promo Retreat cost: Colorless

Sakashima's Student [Planechase 2012] League Tokens 2012 sacrifice Koskun Falls unless youSet: Planechase 2012 Type: Creature Human Ninja Rarity: Rare Cost: {2}{U}{U} Ninjutsu {1}{U} ({1}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) You may have Sakashima's Student enter the battlefield as a copy of any creature on the battlefield, except it's a Ninja in addition to its other creature types.