Oroku Saki, Shredder Rising

Sneak {1}{B} (You may cast this spell for {1}{B} if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.)
Whenever Oroku Saki deals combat damage to a player, you draw a card and lose 1 life.

Teenage Mutant Ninja Turtles

Sneak 1B <em>(You may cast this spell for 1B if you also return an unblocked attacker you control to hand during the declare blockers step. He enters tapped and attacking.)</em>
<br>Whenever Oroku Saki deals combat damage to a player, you draw a card and lose 1 life.