A Mist platform is a platform found on the middle and top levels of the Runespan and is used to cross between islands. It requires a body rune, a water rune, and a nature rune to use, along with level 50 Runecrafting. Using it will consume 2.5 Runespan points.
Runes will only be consumed when moving between two similarly sized islands, and from a larger island to a smaller one. Moving from a small island to a much larger island consumes no runes, to prevent players from getting stuck on dead end islands.
When using the mist platform, the player transforms into a cloud of white mist and floats across the gap.
This information has been compiled as part of the update history project. Some updates may not be included - see here for how to help out!