Body-Flesh-Mountain

Only cast this spell if you control
Kepler Room 004.
All students in the game merge with each other.
The new creature`s power and toughness is
equal to the summed up value of the merged
creatures` powers and toughnesses.
The new creature has all abilities, types and
colors of the merged creatures.
If a teacher comes into play, unwind the
merged creatures and sacrifice one student.