With some careful planning, you can set up some enormously powerful combos
So, you put Stinkweed Imp in your hand instead and mill 5 cards (dredge 5), and with the second draw, you put Life from the Loam in your hand, milling 3 cards
There are a lot of creatures and spells being played on both sides of the table, and eventually someone is able to seize and maintain an advantage to win
That said he is not all that exciting, the +1/+1 buff is no way near as good as something like a Crusade as it is harder to put to good use and easier to remove from play for three and not two mana
Given its overall power and status as a great combo piece, Hermit Druid is a powerful addition to plenty of Commander decks
The special thing is that Garruk Relentless is a double-faced card, while Clone isn't