Silver-Fur Master is a low cost anthem effect for your ninjas that also reduces the ninjutsu ability of each of them by 1 mana
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At the heart of this deck lies The Ur-Dragon, your fearsome commander
A great creature with Panharmonicon is Yarok, the Desecrated, a popular commander that functionally does the same thing but triggers every enter the battlefield of all permanents instead.
The amount of mana in this deck might seem overboard but I can tell you from experience that this is the correct amount: this deck is all about ramping into huge haymakers, so if you want to be hardcasting things like Rise of the Eldrazi you're going to need a LOT of mana
There are a few staples that any Elf deck will love like: Elvish Archdruid Elvish Warmaster Overwhelming Stampede There are several high-power spells in the deck too, like Heroic Intervention and Asceticism to keep your creatures safe, and Genesis Wave to turn your mana into even more creatures