Necromastery - more souls
Star Fall - deals more dmg
Leap - deals bleeding dmg (idk how much) on a small aoe on where it lands
Pounce - Adds 2 more charges
Return - Returns 1/8 of dmg taken
Assassinate - triggers headshot on target (headshot dmg also mcs)
Spider web - Slows 1/2/3/4% of ms when enemy is inside web
Morph - bonus stats when in water (u guys decide when you also want to apply the bonus stats in rosh's area)
Presence Of Dark Lord - Apply Fear to enemies in range (Fear - Reduces little dmg,as,ms,stats,magic resist,regen. since this shit reduces everything, i don't care how little of numbers it reduces. also it stacks with everything related with the things said above)
Great Cleave - Aghanims version deals chaos dmg but nerf the % of damage dealt
Warcry - makes all units around (except allies) shiver. (I guess slow,stun, or silence, My imagination isn't wild enough)
All of kunkka's skills exept X mark - deals more dmg when on water.
Dragon's Blood - adds little more strenght
Purification - Dispels negative buff on target
Io Spirit - adds 2 more spirits
Aphotic Shield - make it pure dmg
Spell Shield - blocks a skill like linkens every 30 secs
Healing Ward - adds another ward
Phantom Rush - after skill activates, next attack is pure dmg (Illus not included, and skill can't be picked if hero has enchant totem, geminate attk, or grow)
Wave Of Terror - Apply fear on target, Duration 2/4/6/8 secs can stack with other skills that have fear
Smoke Screen - deals poison damage on people inside smoke
Rupture - reduce cd or add another charge
Searing Arrows - damage doubles
Spectral Dagger - make dmg pure
.. I would like to suggest more but I got bored