The first is it can be difficult to pilot if you are not familiar with the format
That said, the following deck went 5-0 in a Magic Online League and it boggles my mind
This interdimensional warrior is obsessed with collecting legendary weapons (including the memeworthy Excalipur), and his ability to dig through your top six cards for Equipment and put them directly onto the battlefield is perfect for his weapon-hoarding personality
The remaining 22.7% of the metagame is where things get interesting
Having a way to consistently sacrifice the Warden is the key to making it amazing, so it will be strongest in decks with a heavy sacrifice theme like Athreos, God of Passage, Karador, Ghost Chieftain, and Teysa, Orzhov Scion
I call Beacon of Destiny as source of my choice