not rolled by the roulette
Blood and Sand reserves mana to activate Blood Stance and Sand Stance. In Sand Stance, your melee skills have more area of effect, but less area damage. In Blood Stance, your melee skills have more area damage, but less area of effect. Activating the skill while it's toggled on will alternate between stances. Certain skills also behave differently based on the stance you are currently on.
Yin and Yang.
Level requirement: 4.
The roulette doesn’t roll this gem, so its delivery options haven’t been worked out.