Isa: (I: Ice.) A challenge or frustration. Psychological blocks to thought or activity, including grievances. Standstill, or a time to turn inward and wait for what is to come, or to seek clarity. This rune reinforces runes around it. Isa Merkstave (Isa cannot be reversed, but may lie in opposition): Ego-mania, dullness, blindness, dissipation. Treachery, illusion, deceit, betrayal, guile, stealth, ambush, plots.