Super Mega C.R.A.B. Deathlaser

Whenever a nontoken creature enters the
battlefield under your control, you may search
your library and sideboard for a creature that
shares a type with it, reveal it to your opponent,
put it in your hand, and shuffle your library.
"What does the C.R.A.B. acronym stand for?"
"WHY IS THAT WHAT IS ON YOUR MIND
WHEN YOU'RE STARING DOWN A
DEATHLASER KARL?"