Pos 5 Warlock that transitions into damage build. This guide is meant to be used with the in-game interface.

Laning Phase:
1) Keep your pos 1 carry healthy with 2 levels of Shadow word.
2) Use Fatal Bond if you see opportunity to kill.
* Be aware that using fatal bond can destroy the creep equilibrium. Therefore, you need to use it wisely.

Mid Game (Ult up):
1) Hide out of vision or in the trees at the back.
2) Fatal Bond the grouped up enemies.
3) Use Chaotic offering
4) Follow up with Upheaval

*) This is the main combo that should be on your mind. Best to use if the enemy is grouped up or standing near their creeps for maximum damage from Fatal Bond.
*) It is ok to use Chaotic Offering first before Fatal Bond if the situation does not allow the perfect combo.
*) You can also sneak in a shadow word into the combo if possible. Since enemies are usually grouped up trying to kill one of your friendly cores, it is best if you can use shadow word to heal the friendly core that is being targeted.
*) Purchase the shard instead of waiting for tomenter. The Shard will amplify your upheaval and do a lot of damage.

Mid Game (Ult down):
1) Warding. Roam to place observer wards or deward enemy observer ward where needed.
2) Clear up lanes that are being abandoned by your cores. The idea is to slow down the enemy push and delay friendly towers from getting destroyed as much as possible.
3) Roam to lanes that need help. Heal low hp cores, take bounty runes, take wisdom runes.

Late Game:
1) Positioning is very important late game as the enemy cores are usually strong enough to burst you.
2) Refresher orb can be used to combo your skills twice in a row for burst, or used sparingly as a cooldown reduction.
3) Heal your friendly heroes after winning a war and push. Core heroes are prioritized. Keep your team healthy.