And it can be only done at sorcery speed
Even if Gardevoir has a Lake Boundary () Stadium Card, they will not Knock Out Bronzong after a Coating if the Gardevoir has a Double Rainbow Energy (50x2=100-20=80 - This is part of why Muk's Poison damage () is strong) EmpoZong is a great abuser of Cessation Crystal () while also being able to navigate around the opponent's Cessation Crystal to use Bronzong more effectively
A 2-drop that provides card advantage and triggers effects from creatures like Scourge of Valkas is excellent
For small amounts of milling, its more efficient than Bruvac the Grandiloquent, and its excellent with some Persistent Petitioners
This is one of those cards that transcends the TCG and destined to hit $1,000 sooner rather than later.
There are also a wide range of helpful Artifacts, including Equipment, Vehicles, or just general support ones like Lunatic Pandora which can be used to destroy one of your opponent's cards