Carpetbagger was used by Southerners as a pejorative term, referring to the carpet bags (a form of cheap luggage made from carpet fabric) which many of these newcomers carried. The term came to be associated with opportunism and exploitation by outsiders.
The Wolfsbane Potion is an innovative and complex potion that relieves, but does not cure, the symptoms of lycanthropy. The main ingredient is wolfsbane (also referred to as aconite or monkshood). As such, this Potion is very dangerous when incorrectly concocted, since Aconite is a very poisonous substance.
1 This is the only way to jump 2 blocks with Jump Boost.  There are mobs that would give you unobtainable potions effects such as the Elder Guardian that will give you Mining Fatigue III and the Shulker( New mob in 1.9) gives you Levatation(1.9 new potion effect,lifts you up a block every 0.9 second).