Bloodlust Stack Animation Chances
Bloodlust's chance to growl increases as the stack (each kill in 15 seconds) increases. It goes 5% on the first kill, 20% on the second kill, and 50% on the third kill.
This is verified by the Coalesced file from MP2.
<Section name="sfxgamecontentdlc_con_mp2.sfxpowercustomactionmp_bloodlust">
<Property name="chancetogrowl1" type="0">0.05</Property>
<Property name="chancetogrowl2" type="0">0.20</Property>
<Property name="chancetogrowl3" type="0">0.50</Property>
<Property name="cooldowntime" type="0">(BaseValue=4.f,RankBonuses[1]=0.25f,Formula=DivideByBonusSum)</Property>
<Property name="effectduration" type="0">(BaseValue=15.0f)</Property>
<Property name="encumbrancepenalty" type="0">(BaseValue=0.6f,Formula=BonusIsHardValue)</Property>
<Property name="evolve_healthregenerationbonus1" type="0">0.5f</Property>
<Property name="evolve_healthregenerationbonus2" type="0">1.0f</Property>
<Property name="evolve_meleedamagebonus" type="0">0.1f</Property>
<Property name="evolve_meleedamagecombobonus" type="0">0.1f</Property>
<Property name="evolve_movementcombobonus" type="0">0.05f</Property>
<Property name="evolve_powerdamagebonus" type="0">0.05f</Property>
<Property name="evolve_weapondamagebonus" type="0">0.05f</Property>
<Property name="healthregenerationbonus" type="0">(BaseValue=50.f,RankBonuses[2]=0.3f)</Property>
<Property name="maxcharges" type="0">3</Property>
<Property name="meleedamagebonus" type="0">(BaseValue=0.1f,Formula=BonusIsHardValue)</Property>
<Property name="movementspeedbonus" type="0">(BaseValue=0.05f,Formula=BonusIsHardValue)</Property>
</Section>