Iggy Pop is a fast storm combo deck that wins through Ill-Gotten Gains loops with Brain Freeze, and your primary interaction is disruption rather than a traditional sideboard plan. Red Elemental Blast comes in to counter key blue spells like Intuition, Opt, and Sleight of Hand, which are critical to assembling the combo. Cataclysm and the single-copy artifact removal spells are largely dead here since the opponent runs almost no permanents worth targeting. Your best path to victory is racing them with Terravore and Nimble Mongoose while using Vindicate on their key lands (Cephalid Coliseum, Underground River) and Wasteland/Rishadan Port to slow their mana. Be aware that post-board they bring in Duress and Misdirection, so protect your Red Elemental Blasts and try to keep up disruption mana rather than tapping out for threats.