With Flying and a 5/5 life counter, Shivan Dragon is able to wreak havoc on the opponents battlefield and, if left unchecked, ends matches in short order
Hullbreacher would be a very playable Merfolk without the treasure or the draw denial, but having both was enough to secure Hullbreacher an exclusive spot on the MTG Commander banlist
Lands come in all shapes and sizes but the basic lands are the simplest form
-sigh- Commanders emphasis on color identity in deckbuilding has successfully kept Krrik, Son of Yawgmoth from being a huge problem in the format as a whole, but its still a powerhouse that should be removed or countered on sight against decks with a large or exclusive emphasis on black, as 4 mana can easily become as much as 16, more if life gain enters the equation
Krosan Restorer Decks that consistently enable threshold leverage Krosan Restorer to great effect
Basically, Spree cards will have a base cost (1BB in this case) and some additional effects that function like Kicker