Master ball never misses and works all the time, so its 100% but what you meant by "toss" is to destroy it. So...... if you meant by "toss" you cannot toss master balls and get arceus except by...
The Manifest Need Theory consists of following needs: Achievement Power Affiliation
one is food two water three shelter four clothes and five stuff six oxygen seven
All organisms need to have water, food, and shelter.
You will need grade c or above