They are affectionately referred as "Big Guy" and "Little Guy" each, Ancient Nightmare and Lord Martanos are two massive bosses, which at first appear to be two separate events, but are actually connected in some pretty interesting D2R Items ways. It's a challenge to be to find these bosses and properly battle each of them it's no surprise that many Diablo Immortal players haven't been able to participate in some of the most thrilling and lucrative World Boss battles in the game.
So that's the case, let's take a look how to find and take down Ancient Nightmare and Lord Martanos.
In a rather confusing twist of events, Lord Martanos is said to spawn every 30 minutes. Even though that could mean that his spawns occur every 30 minutes in a formal hour (so 7:07, 7:30, 8:00, etc.) It's quite possible that his timer may be off every now and again. If you are in this zone long enough you'll be alerted when he's spawned.
The fight against Martanos isn't especially difficult compared to some others in DLC Immortal bosses. His health pool is incredibly huge, however, as long as you've got assistance from handful of other players, you can take Martanos down using basic attacks and defensive tactics. You can even take on him if you're strong enough (though it's rare and will likely take an extended time).
While Lord Maranos can drop some random rewards in the game, what you're most interested in is the one he's guaranteed to drop the Zakarum Sigil. Why is that drop crucial D2R Ladder Items Buy? You can answer that by saying they aid in making the tough battle against the Ancient Nightmare just a touch more manageable.