There are some rules on
reddit, but they're pretty bad. Luckily it's not too hard to convert heresy rules to
40k.
MV: 8"
WS: 2+
BS: 2+ S: 6 T: 6 W: 9 A: 6
LD: 10
SV: 2+ (standard primarch statline)
Sword of Balenight: S: +1
AP: -4 D: 3 , For every unmodified saving throw of 1 made against attacks with this weapon, the target suffers d3 mortal wounds in addition to any other damage.
Axe of Helwinter: S: +3
AP: -3 D: 4
Scorn Spitter: 18" assault 4, S5,
AP-2, D: D3
Breaker of Shields, Bringer of Ruin: Every hit roll of 6 made by Russ generates an additional attack with the Sword of Balenight, every wound roll of 6 generates an additional attack with the Axe of Helwinter, attacks generated with this ability cannot generate any additional attacks (6+1 attacks isn't enough for Russ)
Armour Elavagar: Enemy models suffer -1 to hit when in base contact with Russ (more or less same as the heresy rule)
Shield of Asahem: Russ has a 3++ (he needs an invuln)
Primarch of the
VI Legion: re-roll hit rolls of one and rolls of 1, 2, and 3, count as 4 when making charge and advance rolls for friendly SPACE WOLVES models within 12" (pretty standard primarch ability, faster space wolves, which is one of their bigger weaknesses)
Howl of the Death Wolf: Once per battle, Russ can use his Howl of the Death Wolf ability in your command phase. Until your next command phase, Russ may attempt to deny the witch for all attempted enemy psychic powers, regardless of distance. (all primarchs need some
OP borderline broken ability, and Russ was one of the more psychic primarchs)
PL: same as g-man
Points: same as g-man