Duggan, Private Detective
Legendary Creature — Human Detective
Duggan's power and toughness are each equal to the number of cards in your hand.
Whenever Duggan enters or attacks, investigate.
The Most Important Punch in History — 
: Duggan deals damage equal to twice its power to another target creature. Activate only once.
Craig J Spearing
Doctor Who (WHO)
• #1000Rulings
Duggan, Private Detective's last ability can be activated only once during the game. However, if Duggan leaves and later returns to the battlefield, he's considered a new permanent (with a new set of abilities) and it can be activated again.
(wotc • 2023-10-13)
Rulings
Duggan, Private Detective's last ability can be activated only once during the game. However, if Duggan leaves and later returns to the battlefield, he's considered a new permanent (with a new set of abilities) and it can be activated again.
(wotc • 2023-10-13)