Elemental Bomb

You choose the type of bomb (fire, cold, lighting, acid, poison) and you throw the bomb for a maximum range of 60ft which then explodes into smoke of the chosen type in a 15x15 feet area every creature who starts his or walks into the smoke must make an dexterity save or be one staged weakened by this type (you can’t weaken anything by to stages when it’s used multiple times)

(immunity->resistance->neutral->weaknesss->3d8 damage of the chosen type)

At 4-6 level the range increases by 5 feet.
At 7nd level and higher the damage increases by 1d8 per level

The smoke can’t be moved by wind nor any magical means