Eater of the Dead is another spooky guy, but not quite Halloween themed enough
In the case of Sheoldred, the Apocalypse as pictured above, its right beside the word Praetor in the line under the image
So Panharmonicon isn't the source of the second trigger, it's whatever the original source was triggering a second time
Let's explore
(Even the TMNT set's sole pre-constructed Commander deck is built around +1/+1 counters.) If you're currently trying to buy a copy of Doubling Season on the second-hand market, you'll probably wind up spending around $30 (depending on the art, card condition, and seller)
These platforms also provide card authentication and grading services, which can ensure the legitimacy, condition, and, most importantly, the value of your cards