Maybe you updated to 2.15 already while your host didn't update to 2.15 yet ?
Or was it a SP game replay ?
Other possibilities that come to my mind :
-Did the targeted units have mirror images ? A recent thread implifies that mirror image is buggy and seems to make hitting the mirror image unit with AoE spells difficult
-Maybe magma eruption now allows a defense roll to avoid the damage , like falling frost and the description was forgotten to be updated .
Hm, thanks.
No, no mirror images.
It was SP testing.
Just normal units. One set was against Storm Demons, who refused to take damage despite 5 protection, so I figure it is a hidden MR roll