Komeiji Satori, Mind Reader

You may look at the top card of any library at
any time.
Whenever an opponent casts a creature spell,
you may pay {2}. If you do, counter target spell.
Your first spell cast each turn cost {3} less and
activated abilities of creatures cost {1} more
unless it's a youkai creature ability. Whenever an
ability gets triggered, copy it unless it's owner
pays {4}.