Yenma's Dome of Sanctuary

You choose a point within range. An invisible, incorporeal dome is formed with the chosen point being its center. The dome encompasses an a radius of your choice with the maximum radius being (20 * your intelligence modifier) in miles. 

After casting you must then specify something that you wish to keep out, keep in, or from passing either side of the dome (Your Choice). You must be specific with your explanation of the thing you wish not to cross the designated side, as if you were casting the wish spell. (DM's discretion on how to take the explanation).

The spell will continue to stay in effect indefinitely, (I couldn't put infinite, as a duration but yes this spell doesn't have a duration it will only end if you loose concentration) as long as you hold concentration.  While this spell is in effect, if the described thing passes through the dome from the designated side; the specified thing will take [(1 * your Intelligence Modifier) D12 Fire Damage + (1 * your Intelligence Modifier) D12 Thunder Damage] (EX. If you have an Int Mod. of 5 then the damage die will be [5d12 fire + 5d12 thunder]) immediately upon passing. (No Save)

Any wood or other burnable material within 5 feet of the described thing or is included with the described thing upon receiving damage (That's not worn or carried) will be instantly incinerated.

 If this spell is cast using a spell slot of 10th or higher, increase the damage die of each damage type by 1d12 for each slot level above 9th casted (Ex. 12 slot used = an extra 3d12 Fire + 3d12 Thunder)