Hellfire: the stair of destiny portals

-- Remove the current "creature" portal for both horde and alliance respectively --

DELETE FROM creature WHERE guid = '68120';
DELETE FROM creature WHERE guid = '68119';

-- Create new portal object for both horde and alliance respectively --

insert into `gameobject_template` (`entry`, `type`, `displayId`, `name`, `IconName`, `castBarCaption`, `unk1`, `faction`, `flags`, `size`, `questItem1`, `questItem2`, `questItem3`, `questItem4`, `questItem5`, `questItem6`, `data0`, `data1`, `data2`, `data3`, `data4`, `data5`, `data6`, `data7`, `data8`, `data9`, `data10`, `data11`, `data12`, `data13`, `data14`, `data15`, `data16`, `data17`, `data18`, `data19`, `data20`, `data21`, `data22`, `data23`, `mingold`, `maxgold`) values ('500000','22','4395','Portal to Orgrimmar','','','','1735','0','2','0','0','0','0','0','0','17609','0','0','1','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0');

insert into `gameobject_template` (`entry`, `type`, `displayId`, `name`, `IconName`, `castBarCaption`, `unk1`, `faction`, `flags`, `size`, `questItem1`, `questItem2`, `questItem3`, `questItem4`, `questItem5`, `questItem6`, `data0`, `data1`, `data2`, `data3`, `data4`, `data5`, `data6`, `data7`, `data8`, `data9`, `data10`, `data11`, `data12`, `data13`, `data14`, `data15`, `data16`, `data17`, `data18`, `data19`, `data20`, `data21`, `data22`, `data23`, `mingold`, `maxgold`) values('500001','22','4396','Portal to Stormwind','','','','1732','0','2','0','0','0','0','0','0','17334','0','0','1','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0');

-- Place new portals for both horde and alliance respectively --

insert into `gameobject` (`guid`, `id`, `map`, `spawnMask`, `phaseMask`, `position_x`, `position_y`, `position_z`, `orientation`, `rotation0`, `rotation1`, `rotation2`, `rotation3`, `spawntimesecs`, `animprogress`, `state`) values('300000','500000','530','1','1','-161.318','965.41','54.3738','1.5708','0','0','0.00872639','0.999962','181','100','1');

insert into `gameobject` (`guid`, `id`, `map`, `spawnMask`, `phaseMask`, `position_x`, `position_y`, `position_z`, `orientation`, `rotation0`, `rotation1`, `rotation2`, `rotation3`, `spawntimesecs`, `animprogress`, `state`) values('300001','500001','530','1','1','-337.492','962.619','54.3719','1.22173','0','0','-0.156434','0.987688','181','100','1');

Credit to @necrovoice for providing this.