Bloodforged Battle-Axe duplicates itself whenever the equipped creature deals combat damage
Being able to create a 1/1 creature token that can be tapped for green mana can easily help you get more expensive resource-heavy plays off the ground and if you build a ton of these Elves, you can then take full advantage of the third ability to turn your commander into the ultimate draw engine
This means that within a deck with massive amounts of card-drawing effects, Approach of the Second Sun can be cast as early as the very next turn after its initial casting, allowing a player to convert their card draw into a victory
This rabbits engine works well with clone effects as well as flicker effects, producing a large number of rabbit tokens
Other times it would casually ramp up to huge bomb cards while controlling what was going on
I think youll frequently find that youre either not hitting any good creatures to copy, or none at all