Avoidability\Miss Formula

For who don't know whats SAR, its a binary operation removing x bits from the right. so for example if your level is 10, SAR(5,1) will be taking 5 in binary (101) and removing one bit from the right. the result will be 10, which is 2 in decimal.

Confusing...
- If your level is 10,
I think you are referring to the level difference between the monster level and your character level.

SAR(5,1)
Where this 5 came from? Shouldn't it be 10?
SAR(moblevel - your level,1) = SAR(10,1)

Green mushroom's level is 15, the example character I used was level 10. 15-10 = 5, so avoid -= SAR(5,1)