Okiba-Gang Shinobi

Creature - Rat Ninja 3/2, 3BB (5)
Ninjutsu {3}{B} ({3}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Okiba-Gang Shinobi deals combat damage to a player, that player discards two cards.¹
Illus. Mark Zug

Gatherer Card Rulings [Nov 2009]

• 2/1/2005: If the defending player has two or fewer cards in hand when Okiba-Gang Shinobi deals combat damage to that player, they are all discarded.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/10)	Betrayers of Kamigawa (Common)