In MTG, fetch lands are land cards you play that (usually) do not add mana to your mana pool
My wife doesnt like this rule, and so we dont play by it, but in practice it makes for a more strategic game
Its easily #1, and arguably among the best activated ability commanders in the game, but only because its so broken and easy to turn into a one-card infinite combo that starts the game in your command zone
Graded Population Report: Fang, Fearless l'Cie [Borderless Foil] #381 Visualize the distrbution of grades in the chart
There arent really any other commanders that make sense for hydra commanders, although +1/+1 commanders and X-spell commanders can sometimes make use of hydras
Since the activated ability requires no tapping, Displacer Kitten comes in clutch to get multiple activations for complex turns that reward you with a win