I know the visual theme is not suited for this, but I want to do it anyway.
My idea is to use the anagram situation in order to build a “spell” caster game. Spelling the Appropriate word from the anagram.
So here are the words:
1-Easy: Hot , ice, zap , dirt , shot.
2-Medium: Flame , Freeze , Shock, Quake, Barrage
3-Hard: Immolation , electrocution, Shockwave , Disintegrate , Hypothermia.