SPELL_SENSEPRESENCE

Usage       : cast sense presence name
Accumulative: -
Duration    : Instantaneous
Level       : Level 14 mage, level 18 cleric
Mana Usage  : 25

This spell will tell you if a player or mobile is nearby. Note that it will
NOT detect hidden players.

Note: Using this command shortly after logging in will result in your
character being transported to the City of Medievia. This does not apply
if you are in your clanhall, gohome or within the cities of Medievia and
Trellor.