Wind
Tiwaz (ᛏ), the pale grey-green rune. No hero and no realm claims Wind, and like Storm it sits outside the colours a standard journey deals. Nothing in the game leans on it yet.
In detail
Block 8. It only appears in loadouts using 8 or more colours. No focus charm or hero passive uses it yet.
More in glossary
From the current development build. Content and balance may change before release. This public reference includes discoveries and does not reflect your personal unlocks.