The Rat Caller

Whenever a player says a word containing the series of letters "rat" or "crazy," create a 3/5 Crazy Man creature token with "{p/c}, give each opponent a 1/1 rat creature token. {p/b}, goad all rats. If a rat is killed by this creature, put two 1/1 rats onto the battlefield under your control."
—
"Crazy? I was crazy once. They locked me in a room.
A rubber room! A rubber room with rats. The rats
made me crazy. Crazy?"
-Crazy Man