Koraidon, Living Transport

Living Transport 4 (This creature can't attack or
block unless you tap an untapped creature you control
with power 4 or greater.)
Whenever Koraidon, Living Transport attacks,
you may pay {3}. If you do, look at the top three
cards of your library. You may put an equipment
from among those cards on to the battlefield
attached to Koradion, then put the rest on the
bottom of your library in any order.