Devastate a great 2e dnd spell

See page121 yt about it.  https://www.youtube.com/watch?v=OPcn0Kd_VCQ

Level 8 spell. 1 round per level duration. https://adnd2e.fandom.com/wiki/Devastate_(Wizard_Spell)

Cast on self, now your spells are buffed for that many rounds… 

• -5 penalty to enemy saving throw.
• +2 to dmg on each die of your spell, but can't do more than normal max (ex., 60 normal dmg max as in 10d6 the fireball limit in 2e).  
• which reminds me of https://www.enworld.org/threads/fireball-throughout-the-ages.670886/
• Amazing how the damage drops on average over the editions*...
  
  OD&D - d6/level
  Expert - d6/level save for half
  1e - d6/level save for half
  2e - d6/level save for half, capped at 10d6
  3e - d6/level save for half capped at 10d6 (metamagics could boost initial damage)
  4e - 3d6 + Int modifier, save for half (metamagics could increase number of damage dice)
  5e - 8d6 save for half (metamagics could increase number of damage dice)
  
  ...while at the same time everybody's - monster and PC alike - hit points generally increase.
• * - the exception beng 5e, which - rather oddly - has the highest damage of all for casters of 5th-7th level yet by 9th caster level, absent metamagics, has lower damage than any other version except 4e.
  
  Another big difference is that in 2e and earlier the fireball expanded to fill its entire volume, where in 3e and later it doesn't. (((AKA weaker but easier to control and calculate)))
• More info: https://deltasdnd.blogspot.com/2011/07/spells-through-ages-fireball.html
• So RULES CYCLOPEDIA after 2e, caps dmg at 20d6. Interesting, is that one place where it actually went back up in dmg? 
• Figured I'd check in here on the 1990 Allston Rules Cyclopedia product, representing the culmination of the whole Moldvay (B/X)/Mentzer (BXCMI) product line.
• Finally, something else that was added to the spell description (at the end of the second paragraph above) is a mechanic to try and restrict shooting fireballs through arrow slits. However, I found that in practice that this was not very much of an effective restriction in 3E (motionless target ACs are very low, and fireball-casting wizard attack levels with Dexterity bonus quite high, which along with a lack of any ranged penalties for the spell, made for an almost trivially easy to-hit requirement).
• Orig orig: https://www.enworld.org/threads/the-fireball-spell-through-the-editions.169729/

Page121 made the point that it is not in the PHB, it's not even in 1e, but he felt it was great to introduce as loot around a level 16 (I think he said 16) MagicUser b/c too many things are a 50/50 coin toss with strong saving throws around that level.