Corin, Crazed Croc Crafter

When Corin, Crazed Croc Crafter enters the battlefield you create three colourless 0/1 Croc artifact tokens.
{w/u}: Sacrifice a Croc: Create two thousand 5/5 colourless Croc creature tokens.
I have experimented further than any other crafter in history, my goal - to create the perfect Croc army!