That is to say, we're ignoring the Secret Lair decks (with all apologies to that one fan of Everyone's Invited )
Not only can it come into play free of countermagic, but you also create a Serpent token on each upkeep which offers a few options if you choose to sacrifice one of these tokens
Sacrificing anything in Magic needs another card or effect that requires (or allows) you to sacrifice a land as a cost or as an ability itself
He has strong attackers like Arcanine and Tauros, and good trainer cards like Gust of Wind, Professor Oak, and PlusPower
Sword and Shield Restocks Thankfully, Sword & Shield reprints are still popping up
While this will mostly be relevant in casual play, it's worth pointing out that if you have a Naban, Dean of Iteration on the battlefield, every Wizard that enters the battlefield will trigger Warstorm Surge, Fathom Mage, Angelic Chorus, and Purphoros, God of the Forge (among others) an additional time, which opens up an entirely different layer of deck-building potential that was missing with Panharmonicon, which only triggered abilities on artifacts and creatures
