Arcanium Arena Instructor

There are 5 NPCs standing here; one (who tells you some instructions) and four  (all four sell items you can use only inside the  to improve your score: two sell runes and two sell scrolls).

Left to right:
 * Tier II Arcanium Combat Runes
 * Tier I Arcanium Combat Runes
 * Rolled Scrolls - Healing and Traps
 * Open Scrolls - Attacks