When an enemy is coated in A.C.I.D., they take double damage. When a Shell Psion is on the field, all enemies take one less damage.
So say both effects are in play, and I hit the enemy with an attack that deals
n damage. Does it take
2n damage due to the A.C.I.D., but reduced by one because of the Psion, for a total of
2n-1? Or does the attack only deal
n-1 damage because of the Psion, which is then doubled because of the A.C.I.D. for a total of