Though I agree with this statement when all of your Pokmon have a Retreat Cost that is not zero, you should not be discouraging newer players from using this mechanic in the game
This means you won't be able to cast your commander and activate its ability on the same turn
95% of the time, the triggered ability probably isnt worth a removal spell thats going to be better sent towards Rhystic Study or Smothering Tithe, but once enough cards have been exiled, the risk from rolling a 20 is going to weigh on your opponents
Breath of Fury I love extra combat spells almost as much as I love weird creature auras so you can imagine how this Ravnica gem is near and dear to my heart
With Green Suns Zenith being such a powerful engine, you need a really good excuse to run a non-fetchable creature, as it tends to take a slot away from one
The commander of your ship is Captain Nghathrod (who Ill simply refer to as Captain for this article, because Ill lose it if I have to type out Nghathrod 20 times), a 3/6 Horror Pirate that gives all of your Horror creatures menace