It would be very nice with having a Mountain Crusher weapon with the option of all mana colors in game, that is 6 differently weapons, include the Mountain Crusher. Exactly the same spell and mana cost, weapon type is Hammer or Axe.
Ice Hammer (Blue): Explodes Blue gems. Weapon upgrade 6 = create an Ice storm. (Glacial Peaks)
Sun Clobber (Yellow): Explodes Yellow Gems. Weapon upgrade 6 = create a Light storm. (Suncrest)
Bloodaxe (Red): Explodes Red gems. Weapon upgrade 6 = create a Fire storm. (Pridelands)
Oak Batter (Green): Explodes Green gems.Weapon upgrade 6 = create a Leaf storm (Maugrim Woods)
Axe of Khetar (Purple): Explodes Purple gems. Weapon upgrad 6 = create a Dark storm. (Khetar)
Just an example above. Kingdoms that don’t have tons of weapons got picked before others. Weapon upgrade 9 from Mountain Crusher was not mentioned as I feel it need an universal change.
That’s good news. The bad news is that it might take a year or two before we see potentially new good explosion weapons as suggested here. I would not have bet on it that we will see it.