Adding to your board while subtracting from your opponents is one of the best feelings you can have
If I wanted to do this, Id start with a vanilla that could end the game via commander damage, so 3-Hit Club members like Yargle, Glutton of Urborg, Terrian, World Tyrant, or Kalakscion, Hunger Tyrant
Like most Magic: The Gathering cards, the value of Armageddon depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Limited Edition Beta)
Ten poison counters is all it takes, so even a board of five or six creatures can suddenly represent lethal to multiple opponents
While this is already quite impressive, Moraug even provides your creatures with an additional +1/+0 strength boost for each time its attacked this turn, allowing Moraug to generate yet even more further damage