Pia Nalaar
Kaladesh — rare
Legendary Creature — Human Artificer
Pia Nalaar rulings:
2016-09-20: Once a creature has blocked an attacking creature, activating Pia Nalaar's last ability won't cause the attacking creature to become unblocked.
2016-09-20: The “legend rule” cares about legendary permanents with the exact same English name. The Kaladesh™ card Pia Nalaar and the Magic Origins™ card Pia and Kiran Nalaar have different names, so you can control both at the same time.