What is the "ping pong" effect mentioned here?

by Federico   Last Updated March 26, 2018 13:14 PM

I was reading this post on the official forums.

It says

If you, like me, like to shape your maps then make sure you have them all in the same area as you want to put your elder in that area in order to utalize [sic] the ping pong effect between shaper and elder influenced maps.

What is this "ping pong" effect? How can I profit/benefit from it?

When answering, please note:

  • I have not shaped any map under the "War for the Atlas" system, last season I did not play much, if not at all.
  • I play standard, league requires too much time for me.
  • I have not yet completed The Hidden Architect quest

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