When Bone Armor expires, nearby enemy Heroes take damage equal to 12% of their maximum Health.
4
Jailors
Bone Prison spawns 2 Skeletal Warriors. These do not count towards Xul's Raise Skeleton maximum.
Quest: Spawn 80 Skeletal Warriors.
Reward: While fixating on an enemy, Skeletal Warriors gain 25% Movement and Attack speed.
7
Trag'Oul's Essence
Every time a Skeletal Warrior attacks an enemy, restore 0.5% of Xul's maximum Health and 0.2% of his maximum Mana.
10
Skeletal Mages
Vector Targeting
Summon 4 Frost Mages in a line that attack nearby enemies for 47 damage a second and Slow them by 30% for 2 seconds. Lasts up to 15 seconds.
13
Echoes of Death
Spectral Scythe spawns 2 additional scythes next to the first after 1.5 seconds, dealing 40% damage.
16
Bone Spear
Deal 230 damage to enemies in a line.
20
Mortal Wound
Enemies hit by Spectral Scythe receive 75% less healing for 4 seconds.
It has no synergy because he doesn't need to, it's a total hybrid build : Lvl 1 is situational IMO, lvl 4Grim Scythe is for a better uptime on W (So more splitpush power), lvl 7 Trag'Oul's Essence is for the sustain. Ult. lvl 13 Echoes of Death is to add some poke and more target for Mortal wound. Bone Spear for additional poke. You can duo soak by using W on every wave, skeleton allow you not to run out of mana too quickly, and in TF you are a semi caster that poke from afar with Q and Bone Spear, until you see a kill occasion on someone, that you will E to secure.