You can get gems by killing mobs, mining, voting, trading others, or purchasing them on the store. Gems are used in the Gem Shop to buy various things such as Ultra Keys and tools, spawners, rare items, and more.
Stakes will be added during the Beta
Potion effect witches
Brand new economy, new prices on everything, ect.
New faction commands
You can now destroy obsidian, and other unbreakable items with explosives