Special Blocks
There are currently 2 special blocks.
Special blocks are the same as effect blocks. However, what's different about special blocks is that they are consisted of a block and an ore under it, and common ores apply the special things to players, while deepslate ores take the special things off from players.
For example, to equip an elytra to players, you just have to place these two blocks on the ground like this:
You can replace iron ore into other common ores, because they all apply special things to players.
Then if you want to unequip player's elytra, place these two blocks on the ground like this:
You can replace deepslate gold ore into other deepslate ores, because they all take special things off from players.
This will set player's health to 1, which will display as a half heart above player's hotbar.
When resetting player's health, it will set player's health to 20.
This will set player's armor.chest slot to an unbreakable elytra with an enchantment of Curse of Binding.
What's more, the elytra's NBT data is hidden to players.
When resetting, this will wipe out the equipment at player's armor.chest slot.
It seems that there are few special blocks.
Don't worry, because ParkourPack is still under active development. There will definitely be more special blocks in the future. Stay tuned!