Ordinary monster: the monster types in after the death of a certain probability drop a snowball.

Champions monster: the monster reach 50% in value and life after death, it has a 60% probability drop a snowball.

Rare monster: the monster reach 50% in value and life after death, it has a 100% probability drop a snowball.

By the day the influence of nanotubes BUFF BOSS kind of monster include:

The first act：Skeleton King,Queen Aranaea,The Warden,The Butcher

The second act：Maghda,Zoltun Kulle,Belial

The third act：Ghom,Siegebreaker Assault Beast,Cydaea,Azmodan

The fourth act：Rakanoth,Diablo