Shaper and Elder

Hi, i jus finish act 10, I watch some videos on youtube about shaper and elder and map,if i am not understanding wrong, it means if i fight shaper influence map, elder become stronger and he will spawn his four guardians and himself on the map. if i fight elder influence map, shaper will spawn himself on the map, am i right so far?
And what happens if one influence completely disappeared, will it show up again?

You are mostly right.

Elder and shaper influence can be found on maps but they are different. Elder will take territory. He can only have 1 territory at a time. Once he has a territory he will continue to spread to nearby maps on the Atlas as long as they are not influenced by Shaper. Shaper doesn't have a territory. He occupies single maps at random and if there is Elder territory on the Atlas he will prefer maps close to Elder territory.

To help elder spread you need to complete maps that are near his territory and are influenced by Shaper. Once the Elder spreads to enaugh maps he will spawn his guardians in maps (maps will be indicated on the atlas by different color). You can then run those maps and after you defeat the boss a portal will spawn to fight the elder guardian. Once all guardians are defeated you can fight the Elder.

If you complete maps in the elder territory he will lose control of that map and that will shrink the territory. If hes territory is small and you do not clear shaper influenced maps around him he will shrink (read Shaper is kicking his ass). The territory changes every time you complete any map.

The Shaper doesn't work the same way. Shaper is still located in the center of the Atlas. Protected by 4 guardians that are located in the 4 tier 16 maps around the middle Atlas circle. To enter shapers realm and fight him you have to use 4 different shaper pieces in the map device (the same way you enter Atziris realm.) 1 of every 4 pieces drop from the 4 guardian maps once you defeat the boss. The pieces have a 100% drop chance and always drop the one acording to the boss. Example defeating the Guardian of the Hydra will always drop the Hydra fragment, and defeating the Guardian of Minotaur will always drop the minotaur fragment.

Unlike the Elder, Shaper's realm is always treated as a tier 17 map and Shapers power is always the same when fighting him.
The Elder is a little more complicated. If him and his guardians appear in territory that takes white colored maps he will be in his weakest form. If he appears on yellow maps he will be stronger and finally if you fight him in red colored maps he will be really strong.

Both shaper influenced maps and Elder influenced maps have a chance to drop Elder and Shaped items. Those are items that have mods (so called affixes) that can NOT be obtained on non-Elder or non-Shaped items.

Thank you very much, you are so funny XD( shaper kick his ass),so it means no matter one influence has completely disappeared, it will show up again if you do the another influence map. For example, i do the shaper map until shaper influence disappear, and then i kill the elder, then i start to do the elder influence map, shaper influence map will show up again, so it means two influence fighting each other forever? BTW very useful information, thank for you help :D

Well not exactly. Elder takes a territory like a country on the world map. Every map he takes under control must be connected to his "country" or territory. Shaper doesn't take a territory he just takes random maps. Every time you do any map Elder will spread his territory to nearby maps and he will grow in size. How ever he can NOT spread his territory on a map that is influenced by Shaper so if you want him to spread to that map you have to go complete it to get rid of the Shaper infulence on it.

If Elder spreads enaugh some maps in his territory will change color. You will see them dark blue, orange, green,... and if you mouse over them there will be a text "guarded by the enforcer" or something like that. That means that when you kill the boss on that map next time a portal will open to fight that guardian. Once you kill them all Elder will spawn in one of the maps. And once you kill him hes territory will disappear from the Atlas and you need to do maps for him to appear somewhere else again. If you don't like where he appeared or don't want to babysit him from Shaper you can just complete maps in his territory to destroy it before he spreads.

I do it when he appears in white maps cause I want him to appear in red or yellow. There are more tricks you can do. Like if he spawns in white tier 1/2 maps. You can clear Shaper infulenced maps that lead toward yellow maps. Once his territory spreads to yellow you can go do white maps in his territory to remove it from the white maps. And then repeat the process to get him into red maps. And then you can just let him spread in the red maps.

Thank you i mostly understand now :DD