Whether you prefer animating creatures, maximizing token generation, or swarming with Squirrel tokens, there's a Bloomburrow Commander deck for every playstyle
(When this equipment enters create a colorless 1/1 Hero creature token and attach this to it.) Equipped creature gets +3/+2 and is a Warrior in addition to it's other types
I like grabbing Terminate, Swords to Plowshares, and such pretty well
The legendary artifact card that jumps to mind for me is of course Excalibur, which will circumvent that pesky high mana value, but there are a ton of sweet options you could put in the deck outside of Equipment
It is also important to note that you dont give back the lands if Gilt-Leaf Archdruid leaves the battlefield, you keep them forever (or at least until the end of the game)
In a four player Commander game, Smothering Tithe can easily bag you five or six treasures per turn, and if the other players let the card sit on the table unchallenged, it can easily catapult you to victory