Smash-O-Tron 3200

As an additional cost to casting Smash-O-Tron
3200, remove cards from the top of your library
and place them on a flat surface face down,
until you can form the word SMASH with them.
{4}: Reveal a card forming the SMASH word.
You may cast it without paying its casting cost if
it's a spell card. If you do, exile it as it resolves. Otherwise, shuffle it into your library.
"You know what to do !"