1. Supercharging the Treasure Engine

Out: Smuggler's Share & Monologue Tax — These rely entirely on your opponents' actions and often whiff when you need them most.
In: Lotho, Corrupt Shirriff & Black Market Connections — Fast, entirely self-reliant treasure generation that comes down early.

Out: Rain of Riches & Rose Room Treasurer — Five and four mana is simply too slow for these effects in Bracket 4.
In: Xorn & Professional Face-Breaker — Multiplies your treasures and turns them into impulsive card draw to ensure you never run out of gas.

Out: Thopter Engineer & Solemn Simulacrum — Sluggish ramp and low-impact tokens.
In: Magda, Brazen Outlaw & Pitiless Plunderer — Magda turns your tapped Constructs into treasures and can tutor key artifacts. Plunderer is the ultimate aristocrats payoff.

2. Optimizing Synergy & Recursion

Out: Steelshaper's Gift & Cranial Plating — You don't have enough equipment to justify the narrow tutor, and combat damage isn't your primary win condition.
In: Warren Soultrader & Juri, Master of the Revue — Soultrader is an elite free sacrifice outlet that replaces creatures with treasures. Juri grows massive from the sheer volume of treasures you'll be cracking, allowing you to snipe a player for huge damage when he dies.

Out: Trading Post & Hangarback Walker — Far too mana-intensive for high-power pods.
In: Goblin Engineer & Blind Obedience — Engineer is premium, cheap artifact recursion. Blind Obedience stops opponents' fast mana (treasures, fetchlands, mana rocks) in Bracket 4 while giving you an Extort mana-sink for your own treasures.

Out: Magewright's Stone
In: Thousand-Year Elixir — A strict upgrade that allows Jan to tap the very turn he comes down.

3. Upgrading the Mana Base

Out: Tainted Field, Tainted Peak, Shadowblood Ridge, Shattered Landscape
In: Spectator Seating, Luxury Suite, Vault of Champions, City of Brass