Overpowered Mastery

Additions:

Frying Pans (Wood, Copper, Iron, Diamond; Great for huge knockback on enemies)

Source Blocks (Water, Lava, Fire; Crafted using destabilized items and null inventory items)

Destabilized Item (Non-craftable and obtained by right clicking an ultra ingot on an activated Stable World Core)

Stable World Core (Needs a special multiblock structure to activate, and always stays active if the blocks around it are removed, unless block itself is gone, where it will take the other blocks with it)

Null Inventory Item (looks like a 'dev-null' item, but is used to craft Source Blocks; dangerous to drop on the ground)

Changes and Improvements:

Improved balance for items and blocks

Some recipes made more difficult to craft

Bug fixes and other improvements