LT and Warlock never got into a confrontation because that would have meant the end of the Universe. However just the radiating power from these two sent the most powerful cosmic beings back: (please log in to view the image)
After a series of events occured, Loki obtained all 6 Infinity Gems that were now in the Ultraverse...
This allowed the 7th and final Gem to make human contact.
The 7th Infinity Gem comes to Sersi and says:
"I seek to revive the GOD to come".
It seeks to unite itself with the other 6 Gems which are in Loki's possession. Doing so will allow the Gems to become "whole" again: (please log in to view the image)
The Grand Master comes to Loki and asks to play a game. If Loki wins, the GM will give him the 7th Infinity Gem (ego Gem). Though Loki never formed the Gauntlet with his 6 Gems, he still toyed with the GM like he was nothing: (please log in to view the image)
Loki the ever so devious one wins the game that was selected, and the Grand Master gives Loki the Ego Gem (which has now possessed Sersi)