Just swapping menace for deathtouch alone makes this way better
City of Brass is effectively another Mana Confluence, except if someone taps it down you take damage whether you tap it for mana or not
Although it seems like itll make a splash in Standard, Charming Princes flexibility gives it power in Commander as well
For me, I've veered a little bit away from it being a pure landfall deck, and tried to include other ways for drafters to cash in on lands

Antiquities Square Cut (Misprinted Back) 1994 - Metal Cards, Press Checks and Production Anomalies Champions of Kamigawa Textless Cards - Metal Cards, Press Checks and Production Anomalies Fallen Empires (Wyvern Back) 1994 - Metal Cards, Press Checks and Production Anomalies Green Scrap Sheet (MTG Back) - Metal Cards, Press Checks and Production Anomalies Metal Cards - Metal Cards, Press Checks and Production Anomalies Mirage Japanese (Amstel Beer Back) - Metal Cards, Press Checks and Production Anomalies Nemesis Textless Cards - Metal Cards, Press Checks and Production Anomalies Number Cards (From Fifth Edition Simpliflied Chinese Boosters) 1998 - Metal Cards, Press Checks and Production Anomalies Pokemon German Cards Square Cut (MTG Back) 1999 - Metal Cards, Press Checks and Production Anomalies Scourge Theme Decks (Harry Potter Back) 2003 - Metal Cards, Press Checks and Production Anomalies Unlimited (Unlimited - Antiquities back) With Round Corners 1993-1994 - Metal Cards, Press Checks and Production Anomalies Urza's Destiny Textless Common Cards (Round Corners) 1999 - Metal Cards, Press Checks and Production Anomalies Urza's Destiny Textless Uncommon Cards (Round Corners) 1999 - Metal Cards, Press Checks and Production Anomalies Urza's Destiny Textless Rare Cards (Round Corners) 1999 - Metal Cards, Press Checks and Production Anomalies Urza's Destiny Textless Promos 1999 - Metal Cards, Press Checks and Production Anomalies Urza's Saga / Fourth Edition Textless Promos 1999 - Metal Cards, Press Checks and Production Anomalies

Neither of these decks are too valuable, but the alternate art face cards from each are worth a bit more than their other printings