A great play pattern would be to cast Maha first (let's say your commander was removed once already), then play The Reaper, targeting your enemy's best creature and nicking it right away
For a mass board wipe, like Fumigate or Damnation, it's going to have to be Wrap in Vigor or Inspiring Call
Its easy to get greedy by putting it off for just 1 more mana , but you should feel comfortable firing this Sultai card off for X=6 or 7 and hoping you strike gold
What other Lord of the Rings commanders are you interested in building around
It's really strong in our deck
The Moxes are a zero casting cost artifact that give one mana of the color it's associated with- so, the Mox Jet gives black, the Mox Emerald green, et cetera