META-Secret Room

We have collected 5 science words and 5 alchemy words from the previous tasks. Combining them and following the rules gives 5 new words.

Alchemy	Science	Magic	Method
ROT13	PYREX	CLERK	ROT Shift
UPGRADE	MOUNTAIN LION	MAVERICKS	MacOS upgrade
DOWNSCALE	DONGLE	TINGLE	Song scale Do, Re, Mi
LETTERBANK	ALUMINUM NITRATE	MULE TRAIN	remove duplicate letters
DEHYDROGENATE	HEATHER	EATER	remove H's

These 5 new Magic words can be entered into the Magic Seal with letters extracted to the middle

Revealing the final answer of SURVEILLANCE