Notes:

This build is meant to serve as a basic introduction to healing as Nihilist. Not every spell mentioned in the build will be covered in detailed writing. You can read about what each spell does by clicking on them above. 

Infuse: This is your standard healing spell, actively placed orbs will empower Infuse dependent upon which orbs are alive. 

Shadow Affinity: Another healing spell that heals more than Infuse, but has a cast time. Leaving you susceptible to interrupts. Shadow Affinity also grants your target 8% Lifesteal. This Lifesteal is highly valuable for high damage allies such as Assassin. 

Orb of Absolution: A pulsing cleanse orb which heals whenever it cleanses. 

Orb of Replenishment: A fairly straightforward pulsing heal orb. 

Orb of Wisdom:  A fairly straightforward pulsing mana/resource orb. 

Orb of Smoke: An orb which decreases damage taken, and increases outgoing damage alongside some minor lifesteal. 

Blink: Teleport to your cursors location, dealing some damage. If an enemy target needs that small bit of extra damage to be defeated, you can auto attack them and blink on them at the same time that the auto lands. Providing a burst, albeit small, amount of damage that may result in a killing blow. 

Spell Breaker: A standard 5-second shield spell. Use this on a target who has 50-70% health that you are expecting to receive incoming burst damage. Note the 20-second cooldown timer on this spell. 

Important Tips: 

Heal and Damage over-time effects can not crit. However, Orb of Replenishment can. This is because Orb of Replenishment is a pulsating healing spell, and not a heal over time. 

Positioning is important on Nihilist and it can be difficult to recover from heavy pressure. 
Do your best to avoid being the target of incoming burst or openers. 
Blinking while an enemy (Champion's charge or Elder's Bear Rush) is charging to you carries them with you to your new location. Either attempt to bait their mobility first, or use it to your advantage by baiting them back into your team. 
Orbs do not require Line of Sight, try to position them out of range of the enemy. 

Quad-Orb Healer

got to keep wisdom orb, lingering demise and siphon mana on cd.
save use of spell breaker and chaos wave (situational)

try to keep mind leech up on all foes.

when bursting, use lingering demise + autoattacks


hibrid sustain

Good for solo queuing, wining long matches against mana powered classes

Healer

TCC NIHILIST

First enable Dark Inoculation, after keep karma and mind leech at least on 2 foes. Use siphon mana on enemy heal. Use lingering demise on focused target. Use spell breaker and chaos wave for saving you or temmates. Keep orb of smoke up all time. If your comp can't save you from focus or you just can't survive, swap siphon mana to blink. If you too fast go out of mana, take more items with mana regen (needed 50-60/sec), swap siphon mana with mana orb, and optimise usage of spells, you need to cast is only ones in 7 seconds on 1 foe, if they don't have dispel. Use auto-attack)

Karma+Mind leech DPS

Mass damage, good against any comp, versatile in spells.

Build of Kings

Nihilist

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