conjure tornado

this spell summons a tornado and the perfect conditions for it and you can control where it goes after it is summoned. At spellcasting level 1 you can only summon an funnel cloud that will strike fear into a city at most. At spellcasting level 2 you can summon an ef 0 tornado that will cause some damage to chimneys; breaks branches off trees; pushes over shallow-rooted trees; or damage sign boards at most. At spellcasting level 3 you can summon an ef 1 tornado that will peel surfaces off roofs; moving carts pushed off the roads; or sheds may be destroyed at most. At spellcasting level 4 you can summon an ef 2 tornado that will cause considerable damage. Roofs torn off frame houses; full log or stone carts pushed over; large trees snapped or uprooted; light object missiles generated at most. At spellcasting level 5 you can summon an ef 3 tornado that will cause roofs and some walls torn off well constructed houses; most trees in forest uprooted at most. At spellcasting level 6 you can summon an ef 4 tornado that will cause well-constructed houses leveled; structures with weak foundations blown off some distance; carts thrown and large missiles generated at most.  At spellcasting level 7 you can summon an ef 5 tornado that will cause strong frame houses lifted off foundations and carried considerable distances to disintegrate;  Herrerasaurus sized missiles fly through the air in excess of 100 meters; trees debarked; steel re-inforced concrete structures badly damaged and will destroy everything in its path. this is where the maximum area of effect is scale down by what seems apropret between 0 - the max for tornados.