The Vault

1. A spell will help you identify the correct cube. But you only have three spells (maximum) to do it. Then the alarm fairy and the guards show up.
2. The spell isn't BLORPLE, it's JINDAK!
3. JINDAK when you first enter the room. You'll notice something unusual about the two piles.
4. The "real cube" doesn't glow at the same intensity as the fake cubes. But...
5. ...it could be brighter OR dimmer.
6. You have enough time for only two more JINDAKs (three in all) before you have to grab the correct cube and BLORPLE it out of here.
7. This is a variation of a classic coin-weighing puzzle.
8. To get the correct cube from the Outer Vault, enter the Outer Vault without the treasure. Have all your items in the zipper so you can easily move cubes around. Have JINDAK memorized thrice and BLORPLE memorized once. Develop clue 9 and follow the directions.
9. The first JINDAK should be done with four cubes on each pile. TAKE X1, X2, X7, X8. JINDAK. (X3, X4, X5, X6 on the first pile. X9, X10, X11, X12 on the second pile.) If the piles are even then develop clue 10. If the piles are uneven, notice which pile is brighter, then develop clue 13.
10. TAKE X3, X4. PUT X1, X2 IN THE FIRST PILE. JINDAK. (X1, X2, X5, X6 on the first pile. The second pile remains the same.) If the piles are even then develop clue 11. If the piles are uneven, then develop clue 12.
11. TAKE X1. PUT X7 ON THE FIRST PILE. JINDAK. (X7, X2, X5, X6 on the first pile. The second pile remains the same.) If the piles are even then BLORPLE X8. If the piles are uneven then TAKE X7. BLORPLE IT. Now develop clue 17.
12. TAKE X1. PUT X7 ON THE FIRST PILE. JINDAK. (X7, X2, X5, X6 on the first pile. The second pile remains unchanged.) If the piles are even then BLORPLE X1. If the piles are uneven then TAKE X2. BLORPLE IT. Now develop clue 17.
13. PUT X1, X2, X7 ON THE SECOND PILE. GET X9, X10, X11, X12. PUT X9 ON THE FIRST PILE. GET X6. PUT X6 ON THE SECOND PILE. JINDAK. (X3, X4, X5, X9 on the first pile. X6, X1, X2, X7 on the second pile.) If both piles are equal, then develop clue 14. If the piles are uneven the same way they were in clue 9, then develop clue 15. If the piles are uneven in the opposite way they were in clue 9, then develop clue 16.
14. Take all of the cubes off of both piles. PUT X10 ON THE FIRST PILE. PUT X11 ON THE SECOND PILE. JINDAK. If the piles are even then GET X12. BLORPLE IT. If the piles are uneven the same way they were in clue 9, then GET X11. BLORPLE IT. If the piles are uneven in the opposite way they were in clue 9, then GET X10. BLORPLE IT. Now develop clue 17.