Splinter's Technique
Sorcery
Sneak 
(You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step.)
Search your library for a card, put that card into your hand, then shuffle.
"Behold the secret technique only taught to true masters of the Foot Clan."
Illustrated by
Teenage Mutant Ninja Turtles#233RareEnglish