Wizard AE spells hitting pets - big bug for rain spells
 

Since rain spells are consumed after hitting 4 mobs & not working as intended to actually do 4 mobs for 3 waves of damage, the group members pets are soaking up targets and the rain only hits 1 mob.

Noticed that the column line of spells is also hitting pets.

The pets always say they resist the spell, but soaking up the targets makes the rain spells completely ineffective.

That's classic behaviour. Go back to 1999 and file your bug report with Verant.