C_PetBattles.GetAllEffectNames

Returns the name of an effect parameter for Pet Battles.

effectParamString1, effectParamString2, effectParamString3, ... = {C_PetBattles.GetAllEffectNames()}

Returns

effectParamString1, effectParamString2, effectParamString3, ...: string - Each return is the name of a different effect parameter for Pet Battles.

These effect names can be passed to C_PetBattles.GetAbilityEffectInfo in order to return information about that effect. For example, to return the damage variance of Baby Winston's [Tesla Cannon]:

/dump C_PetBattles.GetAbilityEffectInfo(1625, 1, 1, "variance")
[1]=60

This function returns an extreme amount of data and is best dealt with by putting the results directly into a table. This is how Blizzard uses it:

local effectParamStrings = {C_PetBattles.GetAllEffectNames()}

This the list of returns as of Patch 5.3.0:

accuracy - Ability hit chance percentage (e.g. 0%, 25%, 35%, 50%, 85%, 100%, 150%)
auraabilityid
auraid
basechancetosucceed
bonuspoints
bonusstate
boost
casterimmunestate
casterstate
casterstatevalue
chainfailure
chance
dontmiss
duration
duration2
evenmorepoints
healthpercentage
healthpercentthreshold
increasepertoss
index
isperiodic
lockduration
maxallowed
maxpoints
morepoints
newduration
none
overrideindex
percentage
points
pointsincreaseperuse
pointsmax
reportfailsasimmune
requiredcasterpettype
requiredcasterstate
requiredtargetpettype
requiredtargetstate
state
statechange
statemax
statemin
statepoints
statetomultiplyagainst
statetotriggermaxpoints
statevalue
targetimmunestate
targetstate
targetstatevalue
targetteststate
targetteststatevalue
turnstoadvance
unused
weatherstate

These are the newer abilities that appear as of patch 8.0.1:

ability 1
ability 2
asdf
cooldownmodification
enablereverse
int 1
power - The base damage or healing of the ability (base power is before being taking level, quality, or breed - effectively a level 1, poor quality pet, with no breed bonuses)
sdf
threshold
tickdownfirstround
variance - the variance to be applied to power. Base damage or healing will be power±(variance/200)

Patch 5.0.4 (2012-08-28): Added.