Heh, yeah fun times 
Also it looks like it’s not actually just Magic that’s changed.
Just to preface, I have 0 Kingdoms at level 10 yet so no stat bonuses. And it looks like all stats are elevated.
It’s easiest to see on the Ghoul…
A level 1 Ghoul should have 2 Attack, 2 Armor, 2 Life, 1 Magic. Taking into account the Lord of Thorns buff in my screen shot it should be 2/3/3/1, however it actually has 6/9/16/6, or 6/8/15/6 without Lord of Thorns, which is odd as no level of Ghoul has that spread. The closest I can figure out is a level 15 Ghoul, which has 5/7/12/5 and ascended to UR which gives +1/+2/+3/+0 for a total of 6/9/15/5 (which is correct on Attack and Life, but off by -1 on Magic and by +1 on armour), or a level 17 Ghoul un-ascended (ie Common) which has a spread of 6/9/15/6, which has Attack, Health and Magic correct, but is 1 short on Armour (remembering the +1 life and armour from Lord of Thorns)
If someone else could check out the summons on the following troops that would be awesome, I currently don’t have them or else I would do it:
Goblin King
Gar’Nok
Also not sure if this should be moved to a bug report area (Support?) so a Dev (maybe @Sirrian or @Nimhain?) can this and confirm that this isn’t working as intended? (or if it is what the formula for the stats of a summon is if it IS working as intended?)
EDIT: Either I’m going crazy (entirely possible) and this was in the Support forum all along, or it’s now been moved there, and if that’s the case thanks to whoever moved it!