Grace O'Mally

When Grace O'Mally enters the battlefield, you
become the monarch.
Whenever an opponent attacks you while you're
the monarch, Grace O'Mally deals damage to
that player equal to the number of cards in their
hand.
"The most notorious woman on all the western coasts,
...the nurse of all rebellions in the province for forty
years."-Sir Henry Sidney trying to have her hanged