04/10/2004 If a spell or ability damages multiple things, divide up the damage before applying this effect. This means you can’t normally end up with an odd amount of damage on something.
04/10/2004 The trample rules cause damage to be divided before it is doubled.

If damage dealt by a source you control is being divided or assigned among multiple permanents an opponent controls or among an opponent and one or more permanents they control, divide the original amount before adding 2. For example, if you attack with a 5/5 red creature with trample and your opponent blocks with a 2/2 creature, you can assign 2 damage to the blocker and 3 damage to the defending player. These amounts are then modified to 4 and 5, respectively.