The Grand Armillary

This card costs {w}{u}{b}{r}{g} to cast instead of it's
normal mana cost if you control no other
legendary permanents.
Ward — This card's controller draws a card.
Whenever you draw a card, put a constellation
counter on The Grand Armillary, then you may
remove any number of counters from it. When
you do, each opponent loses X life, where X is
the number of counters removed this way.