Mystic Study

Cumulative upkeep {2} (At the beginning of your
upkeep, put an age counter on this permanent,
then sacrifice it unless you pay its upkeep cost for
each age counter on it.)
Whenever an opponent casts a spell you may
draw a card unless that player pays {1}.
Whenever an opponent casts a noncreature spell
you draw a card unless that player pays {4}.