When Immolation is used Illuminating Fire, it should guarantee the next attack to be a crit however this is not always the case when using Gambler’s Fallacy. I’m assuming that 2 quick consecutive attacks causes the second one to have 50% less chance.
Obviously there’s not much reason to use this necklace in combination with Illuminating Fire but would still be good to fix.
Repro:
Attack with firebrand that is specced into Illuminating fire and Immolation to get 3+ stacks
Cast any other melee attack
Stacks are consumed and you crit
Attack with firebrand once again to get 3+ stacks
Cast another melee attack which does not always crit.