Using this card to tap for mana for your X-spells allows you to copy them for free
They quickly restock before missing sales
Honorable Mention #2: Tradewind Rider If this list were Top Ten Spirits for Standard, this would be a clear #1 since it dominated the era with multiple egregious decks like Trade-Geddon where you cast Armageddon and then bounced every new land with this, which I built, or Trade-Awake with Awakening to untap each turn all stuff for more bounces
Caring about the mana value of spells is a theme that runs in opposition to traditional Spellslinger strategies that want to chain together cheap, low-cost, and efficient instant and sorcery spells, and consistent token generation gives the deck a more impactful board presence to fend off attacks
This trap can single-handedly shut down entire mechanics when drawn going first
You can try, but I think it involves cutting down on the number of actual Izzet-mana-producing lands, which are huge for ensuring the early color flexibility you need