This is an old revision of the document!
(v5.54 beta, which is identical to v5.54 release)
I don't normally withhold mechanical stuff, but in this case I did. The reason I didn't post this before, is because in 5.53 and earlier versions 16 gems spread across any number of commanders would trigger gem usage, even if they were set to retreat and had no magic paths to use the gems. Gemburning every turn with scouts set to hold as many turns as is safe vs the enemy scripting then retreat did not sound like it was going to be terribly fun to play around. Even if you got some of the gembearing commanders killed, you could almost certainly trigger more gem loss of pointless spells than you lost when burning in this way.