Untamed Shield

You surround yourself with the untamed forces of the Never-Never in a cacophony of colors and ethereal fabrics that act like a shield. The sounds of the Never-Never always present making stealth impossible against anything that is not both blind and deaf.
For the duration if you are targeted by or in the area of effect of a spell of 4th level or lower you can use your reaction to counteract the spell, the chaotic forces of the Never-Never instead replacing it with a chaotic occurrence. Roll on the Wild Magic Table, the number rolled will be considered as if you casted the spell.
The shield remains for 1 minute or until it makes a total of 4 level of spells to go wild. 
If you are targeted by or in the area of effect of a spell of higher level than the spell slot you casted this spell with then you can still try to make it go wild. Make an ability check using your spellcasting ability. The DC equals 10 + the spell's level–the number of levels this spell can still repel. If the check succeeds, the spell is goes wild. After this occurs, regardless if it goes wild or not the spell ends.

At higher levels: For each spell slots above 4th the maximum level of spell you can make go wild increases by 1, so at 5th level you can make 5 total level of spells to go wild and so on.