A solid red commander and pretty popular in the 99, Purphoros, God of the Forge is a potent, and fairly pricey card: The regular version for the original Theros printing sits around $25, and later premium versions are close to $50
Ok Prince John - Gold Lover #147 (Lorcana Shimmering Skies) Details All prices are the current market price
The fact that many of the cards within, such as Summons, are so well designed only adds to the sets appeal and overall success
Conventional wisdom will be that you can always get two cards for 4 mana, which is in-line with all kinds of 4 mana spells from Hieroglyphic Illumination to Glimmer of Genius
Even if you never find an iceberg in a loch, you should find Emry, Lurker of the Loch in the same deck as Inverted Iceberg, their synergy is smooth
While not every Modern deck uses it, blue decks like Murktide or Eldrazi Breach benefit from having a way to find the perfect next play