Current questions and answers regarding the map editor.

An obelisk can be just one. I don't know what the error is; perhaps you should prevent the computer from searching for the Tear. To do this, select the obelisk and the Tear itself with a region and write the following script:
SetRegionBlocked(--script name of the region in quotes--, PLAYER_2, true);

For two regions, use two scripts. Do not confuse the script names.