The Promised End of my list, the end boss of Standard
Top Five Artifact Deck Commanders Urza, Chief Artificer Urza, Chief Artificer is the premier choice for players who want to overwhelm the table with a biological and mechanical army
It does not always punish them quickly

Provided Decklist: Monsters: 30 ||| Divine Dragon Titanomakhia || Red-Eyes Darkness Metal Dragon | Divine Dragon Lord Felgrand | Light and Darkness Metal Dragon | Dragunity Arma Leyvaten || Double Disruptor Dragon | Tempest, Dragon Ruler of Storms ||| Arkbrave Dragon | Black Dragon Collapserpent | White Dragon Wyverbuster | Magnarokket Dragon ||| Starleige Seyfert | Metalrokket Dragon | Rokket Caliber ||| Rokket Tracer | Rokket Recharger || Dragunity Remus | Dragunity Phalanx | Borreload Riot Dragon Spells: 15 ||| Return of the Dragon Lords | Upstart Goblin | Terraforming | Monster Reborn | Heavy Interlock ||| Quick Launch | Dragunity Divine Lance | Boot Sector Launch ||| Dragon Ravine Extra: | Dragunity Knight Areadbhair | Chaos Ruler, the Chaotic Magical Dragon | The Zombie Vampire | Borrelend Dragon | Unchained Abomination | Borrelsword Dragon | Saryuja Skull Dread | Triple Burst Dragon | Galaxy Satellite Dragon | Dragunity Knight Romulus | Twin Triangle Dragon | Quadborrel Dragon | Hieratic Seal of the Heavenly Spheres | Guardragon Pisty | Striker Dragon Note: This is continuing the style of Creative Deck Profile articles, designed to showcase a build through replays and an attached summary

This isnt an exact science though
Even though theyre some of the rarest cards in the Pokemon TCG, gold cards rarely become some of the most valuable additions to a set