Hi ! this is my Sabretooth hero suggestion, i must say that i have a terrible english, so forgive that.
Mechanic :
Blood lust : Some power generate blood lust. other cost blood lust.
Note : Sabretooth as no spirit, he's main resource is blood lust.
Mortal wound : Sabretooth don't apply any bleed effect with his power. Instead he can apply mortal wound (dot dmg, last 10 sec if no more mortal wound has been apply) to his enemies, up to 5. When he reach 5 mortal wound, he enter in berserk state gaining blood lust over time/move speed and have access to some other power, on top of that he gain unlimited mortal wound resource. (last : 10 sec)
Note : Sabretooth Can do this each time he enter in berserk state : 
bloodthirsty tree :
-Savage claws: Slice the enemies with a powerful claw attack, can apply mortal wound. (basic/melee/physical dmg)
Note : mortal wound chance : 20%, if maxed 50%, generate blood lust resource.
-Wild Fang: Sabretooth leaps forward to a targeted location, if he hit a enemies, he stun him, dealing dmg, can apply mortal wound. (melee/movement/physical dmg)
Note : mortal wound chance : 20%, if maxed 50% , use blood lust resource.
The move :
-Wild tiger : move quickly like a cat. (movement)
The move : 
-Circular claws: Attack enemies all around at short range, can apply mortal wound. (melee/area/physical dmg)
Note : mortal wound chance : 50%, if maxed 100%, maximum mortal wound with this attack : 2 (one per enemy hit), use blood lust resource.
-Rapid Slash: Sabretooth rears back, then dashes quickly to a targeted location and slashes the
opponent, can be use multiple time (each dash does more dmg than the previous, to 20% on the first to 100% at dash5 and after) , generate 2 mortal. (melee/movement/physical dmg).
Note :The power itself generate 2 Mortal wound units and each dash will cost 1 mortal wound resource, so with a empty mortal wound bar, you can do 2 dash, with a full one, you enter in berserk state and can dash for all the duration of the proc. you need to press a key to perform a dash, you can only dash on a enemies location (even multiple time on the same) if you miss a dash, the power is in cooldown. (15-20sec)
The move :
-Berserker claws: Sabretooth dashes exclaiming "Berserker Claw!" and slashes the enemies with a devastating claw attack. can be use only in berserker mode, always brutal strike, use mortal wound resource. (signature/melee/movement/physical dmg)
Note : cooldown : 30 sec. When the power is use, put a end to the berserk rage buff.
The move : 
-Redemption: Sabretooth try to not kill anymore, as result, he can now use Berserker claws even if he isn't in berserk mode and with a reduced cooldown , do regular dmg even in berserk state. (toggle)
Note : reduced cooldown : 15 sec.
Enhanced tree :
-Predator's sense: Sabretooth is able to see the enemies on the map, gain movespeed, additionally gain more blood lust resource and an increase crit rating for the 10 first second when he 's doing dmg. (passive)
Note :
Wiki1 (Sabretooth possesses superhumanly acute senses that are comparable to those possessed by certain animals. Sabretooth is able to see objects with greater clarity and at much greater distances than an ordinary human. His sight is enhanced to the point that he can see with this same level of clarity in almost complete darkness, just like a nocturnal cat...He is able to track targets with an impressive degree of success, even if the scent has been eroded by natural factors such as weather conditions. His sense of taste is also developed to superhuman levels.
Wiki2 (His agility and reflexes were enhanced beyond the human body's natural limits. With an ability to flex, relax, and reflex his musculature at dramatically improved speeds, Sabretooth's pounce can be devastating. As depicted in both movies and comics throughout his appearances, most enemies can not react to his leap before being hit.[72] Combined with the ability to stalk, move quietly, and see in the dark he has the initiative in a fight. Even Wolverine's instincts are incapable of countering this effect fully)
-Superhuman stamina : maximum health increase, regenerate heath when you hit with a melee power, regenerate health per second. (passive)
Note :
Wiki (..His mutant healing factor grants him superhuman stamina..)
-Graydon Creed 's strength enhancement : Dmg rating increase, brute strike increase, brute strike dmg increase. (passive)
Note :
Wiki : (..Sabretooth received his first strength enhancement from his son, Graydon Creed...)
-Adamantium bones : Defense increased, physical dmg rating increase. (passive)
Note :
Wiki : (...Sabretooth's skeleton and claws were molecularly laced with the indestructible metal adamantium by Apocalypse,[73] ...Later, the Weapon X program bonded adamantium to his bones once more.)
-Sharped claw: gain increase mortal wound dot dmg, gain increase mortal wound chance (passive)
Note : increase the mortal wound chance to 10%, if maxed 50%.
Mindless beast: Gain 2 strength, lose 2 intell, gain improved blood lust resource rate, gain crit, gain crit dmg, gain an improve berserker claw (cooldown reduce) who can be use without the berserk state. can't use his friend from the tree " friend and foes. (toggle)
Note :
(..Sabretooth was taken to an old Weapon X facility and somehow turned into a rabid, mindless beast..)
Friends and foe tree : (only 1 permanent summon can be active at one time)
-Wild Child: gain a permanent Wild Child companion. (permanent summon/physical/melee)
Note : do basic attack, additionally have 5 different attack, each one is perform when Sabretooth does his skill, each skill do a different attack from wild child, each cost blood lust resource.
Savage claws : Wild Child perform a combo of 3 attack in front of him. (area)
Wild fang : Wild Child taunt all the enemies in a small area.
Circular claws : Wild Child hit all the enemies at mid range.
Rapid slash : Wild Child follow Sabretooth and hit the same enemies. every time Wild Child perform 3 successful rapid slash,
Sabretooth gain one mortal wound stock.
Berserker claws : Wild Child join Sabretooth for even more dmg. In redemption mode, Wild Child don't attack.
-Birdy : gain a permanent birdy companion, can only be summon in redemption mode. (permanent summon/physical dmg/energy dmg/ranged)
Note : like Wild Child, do basic dmg and have 4 different attack. Each of them cost blood lust resource
Savage claws : Birdy use her rocket launcher and shot several rocket on different target. (physical dmg)
Wild fang : Birdy throw some grenades with different effect (freeze/fire dmg)
Circular claws : Birdy use precise shot to kill enemy (energy dmg/does good dmg)
Rapid slash : Birdy use 2 gun and shot all the enemies in front of her, each enemies successfully charged by Sabretooth
increase the duration of this power. (good dmg/energy dmg)
Berserker claws : Birdy don't attack when Sabretooth use berserker claws.
-Heavy Armed Birdy : Birdy use her gatling gun for massive damage. Can only be use in redemption mode and when Birdy is active, use blood lust resource for each second you hold down the hotkey. (Range/Energy dmg)
Note : You can hold down the hotkey with this power. Sabretooth can attack during that time.
-Blink teleport: Blink has 50% chance to appear and attack Sabretooth's enemies (cooldown : 30sec), she have also 20% chance to save Sabretooth life by teleporting him when he would normally die (1min cooldown). (passive)
Note : the more point you put in that skill, the more chance to appear will be high (50% is the max)
-Back to Back: Call wolverine (does skill from the game), lose 5% life, gain 100% mortal wound chance, gain 3 mortal wound stock, last 15 sec (Physical dmg/melee).
Note : cooldown is 1m. Can only be summon if no other permanent summon is active.
-Brotherhood of mutants: Call Magneto (does skill from the game), heavy dmg, lose all mortal wound stock and can't gain it while magneto is on the battlefield. Last 15 sec (energy dmg/ranged).
Note : cooldown is 1m. Can only be summon if no other permanent summon is active.
-True nature: Despite the fact he decide to not kill anymore, Sabretooth can't fight again his true nature. Can only be use in redemption mode, gaining an improve Berserker claw (same dmg as non redemption mode), the buff give also move speed/dmg rating/crit dmg and 5 mortal wound stock. (buff)
Note : last : 20sec, cooldown : 1min
Ultimate :
Blink Revenge : Never anger Blink..
