Thanks to Plattym3 for this information

Name	Buy	Sell	Found	Description
Change		300		Transforms monsters into another type; typically weaker
Chaos		240		Confuse enemy; makes monsters move erratically
Cloning		160		Wave at a monster to double it
Expel		240		Sends monsters into another room
Invisible		40		Makes an enemy invisible
Multi-Edge		240		Enemy's HP drops to 1; your HP is halved
Prevention		100		Keeps you from falling through the floor traps
Seal		240		Keeps monsters from using special moves
Sleep		240		Put enemy to sleep
Slow		240		Makes enemies move at 1/2 speed
SpeedUp		120		Makes enemies move twice as fast
Thunder		240		Shoots thunder bolts at enemies