GetUnitForLinkedSpell

Возможные виды таргетов:

LINK_UNIT_TYPE_DEFAULT         = 0,

    LINK_UNIT_TYPE_PET             = 1,

    LINK_UNIT_TYPE_OWNER           = 2,

    LINK_UNIT_TYPE_CASTER          = 3,

    LINK_UNIT_TYPE_SELECTED        = 4,

    LINK_UNIT_TYPE_TARGET          = 5,

    LINK_UNIT_TYPE_VICTIM          = 6,

    LINK_UNIT_TYPE_ATTACKER        = 7,

    LINK_UNIT_TYPE_NEARBY          = 8,

    LINK_UNIT_TYPE_NEARBY_ALLY     = 9,

    LINK_UNIT_TYPE_ORIGINALCASTER  = 10,

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   LINK_HAS_ATTACKABLE           = 11,
   LINK_HAS_DISTANCE             = 12, 
   LINK_HAS_AURA_STACK_ON_CASTER = 13,
   LINK_HAS_AURA_STACK_ON_TARGET = 14,
   LINK_HAS_CASTER_FULL_HP       = 15,
   LINK_HAS_TARGET_FULL_HP       = 16,
   LINK_IN_COMBAT                = 17,
   LINK_HAS_CASTER_CHECK_HP      = 18,
   LINK_HAS_TARGET_CHECK_HP      = 19,