A reference for those unfamiliar with this Nightblade ultimate ability:
SOUL SIPHON
Cast Time
Duration
Target
Range
Cost
Instant
4s
Area
28m radius
150 Ultimate
Sanctify your soul and the souls of nearby allies with a night rune, healing for 1193 Health and an additional 3232 Health over 4 seconds.
You and your allies will also receive Major Vitality, increasing your healing received by 30% for 4 seconds.
An ally can target a nearby enemy and activate the Soul Leech synergy dealing 1104 Magic Damage to them and healing for any damage caused.
Heals you and nearby allies but deals no damage and no longer stuns.
Let's start with this misc. quote:
We added cast times so there is counter play; we felt that having 3-4 abilities hitting you at once, including an Ultimate, is just too much.
Out of all the ultimate abilities where a cast time was introduced, Soul Siphon was the only pure defensive ultimate hindered by this.
ALL of the others have a damage component to them.
Then there is this quote:
Adjusted the animations and cast times for many Ultimates that are meant to have high impact to better synchronize their attacks to their animations.
It could be argued that ultimate abilities such as Barrier, Negate, Panacea, Secluded Grove, Rite of Passage have a high impact (defensively) but they were left untouched.
NOTE: My aim is not to hinder any of these so please do not take this thread in a negative manner.
Finally, the last bit of the above quote:
These abilities cannot be interrupted, and canceling them or being stopped while casting them will not consume your Ultimate.
With lag comes the illusion that these ultimate abilities with cast times are indeed being interrupted (because on the user's screen it is). It makes it extremely difficult to utilize a high impact defensive ultimate ability when it is needed - it makes Soul Siphon very undesirable.
In it's current form, this ultimate ability is only useful when your teammates don't really need it yet. When they do need it though, consider the cast time + lag and the result is usually a very ineffective defensive ultimate.
I know some players out there have made it work and I am honestly surprised if you do like how Soul Siphon is now. My opinion is that it's very sloppy and unreliable.
I hope someone from the development team has time to read this and put thought into what I have requested.