Youre packing all the usual suspects cantrip-wise, which all feel excellent when you add Create a 3/3 wraith with menace on top of their effects
Since you will likely have your ink open if you sing it, you can then use your open ink to play one of the cards you just drew
Whether it's destroying something your opponent controls or helping you fix your lands, there are all sorts of powerful effects that Panharmonicon lets you double up on
Im specifically talking about Giver of Runes, Esper Sentinel, and Grand Abolisher for the early game and Burning-Rune Demon and Razaketh, the Foulblooded for later
Expect a deeper explanation in the coming weeks when I do an extensive writeup on the character and his cards soon
Bladewing can bring back another Dragon creature from the graveyard straight to the battlefield, a two-for-one deal that Commander players won't usually pass up