Six stratagems, all naming CHARACTER units, and two of them were amended by name in Faction Pack v1.2.
Vengeful Surge (1 CP) fires in your opponent's Shooting phase, just after an enemy selects your character as a target: your unit makes a surge move of up to D6 inches, and if your unit is NOT your Favoured Champions you can re-roll the distance. That re-roll clause is what the pack's rewrite added, and note which way round it works: it helps the characters who do not hold the title, which is the detachment nudging your other leaders forward to go and take it.
Refusal to be Outdone (1 CP) is the other rewritten entry. When a character unit within 12 inches of an engaged enemy unit declares a charge, it can re-roll charge rolls but must end that charge engaged with one or more of those enemy units. It is a committed charge, not a free one.
Heightened Jealousy (1 CP) needs reading twice. It triggers just after a character becomes your Favoured Champions, or just after the Favoured Champions destroys an enemy unit, and until the end of the phase it gives +1 Strength to attacks made by every Emperor's Children CHARACTER unit that is NOT your Favoured Champions. The buff goes to everyone except the unit you targeted, which fits the theme exactly: your other champions are spurred on by jealousy.
Devoted Duellists (1 CP) targets one or more character units for the same cost and gives their melee weapons [SUSTAINED HITS 1] against one selected enemy unit. The multi-target clause makes it unusually efficient in a list with several characters.
Beautiful Death (1 CP) lets destroyed models in a character unit fight anyway on a 4+, with +1 to that roll if the unit is your Favoured Champions. Diabolic Majesty (1 CP) forces Battle-shock tests at -1 on enemies within 6 inches just after a character takes the title, once per battle round.