Karragon

I've found the comet to be very hit and miss depending on the opposing army/deployment. Against something that clusters all up together it is amazing and, if you're going 2nd, can potentially kill their buff heroes off without them being able to move out of range. Against Death, for example, and now that the Staff of Focus pairing isn't allowed it's just not going to do enough damage to be worth while. Plus you've only got 1 wizard capable of casting it. You'd probably get more mileage out of a Knight-Heraldor or a Lord-Relictor instead

Isn't that what "Gathering of Might" page 38 in the Generals Handbook is?

It's 2 in every 5 + 1 for prime. The warscroll that came with Soulwars said 1/3 but everywhere else it says 2/5

RAW I'd say it just makes the total a 6: It doesn't mention a die or the dice at all