Given that storm has typically been much trickier to access recently, with Ral, Crackling Wit being a good recent example, it feels as though the initial mana cost is justified for this spell , but also very much worth it
I had the card in reverse holo as a kid
For this combo to work, we need our commander, Intruder Alarm, a Room that makes a creature when we unlock it (Grand Entryway // Elegant Rotunda, Smoky Lounge // Misty Salon, Unholy Annex // Ritual Chamber, Spiked Corridor // Torture Pit, Dollmakers Shop // Porcelain Gallery or my favorite Mirror Room // Fractured Realm), and an untapper (Kioras Follower, Vizier of Tumbling Sands, or Kelpie Guide)
No, the emerge cost only reduces the generic mana cost
"Color fixed" cards, of course, ended up being the timeshifted cards of the set (although White Memory Lapse was a development casualty), and they do a fantastic job of conveying alternate reality to players who've been around long enough to see the originals