Maester of Dragonstone

Whenever an artifact enters the battlefield under
your control, Maester Cressen deals 1 damage to
any target.
Cressen was the Maester of Dragonstone and a
servant of Stannis Baratheon. He died trying to trick
Melisandre into sharing a poisoned cup of wine with
him.
"Is this how you treat the Gods of your fathers? Are
you so eager to spit on your ancestors?"
—Cressen to the people of Dragonstone