Other tapped legendary creatures you control have Indestructible
The scaling makes it great in decks packed with 3- or 4-color spells where it turns every cast into both value and direct pressure
That entire way of thinking feels so divorced from Magics current design philosophy and product line
Furthermore, Genie possesses the DISAPPEAR ability, allowing you to exercise strategic control by returning a chosen character to its players hand when you play this card
Goblin Electromancer, Enthusiastic Mechaunaut, and Rowan, Scholar of Sparks are just a few examples of how Izzet makes instants, sorceries, and artifacts all cheaper to cast
Coruscation Mage and Black Mage's Rod are both powerful since they trigger off all noncreature spells, not just instants and sorceries, but Longshot, Rebel Bowman and Thermo-Alchemist are still perfectly respectable cards