In battle the Slann Mage-Priest rides upon his floating stone palanquin, and is often accompanied by the utterly resolute Saurus Temple Guard. The Temple Guard form a solid block of reptilian sinew through which an enemy wishing to attack the Slann Mage-Priest must first fight.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
GuardiansURL Copied!
When a model with the Mage-Priest Palanquin special rule joins a unit whose front rank contains five or more models with the Guardians special rule, it must be placed in the second rank, rather than the first. If the unit's front rank is ever reduced to four or fewer models with the Guardians special rule, the model with the Mage-Priest Palanquin special rule must immediately move to the front rank (displacing rank and file models if necessary).
A model with the Mage-Priest Palanquin special rule who is in base contact with a model with the Guardians special rule is considered to be the same Troop Type as them for the purpose of "Look Out Sir!", and cannot be targeted separately from the rest of the unit. If this combined unit is hit by a bolt thrower, the shot always hits the model closest to the bolt thrower that has the Guardians special rule. If this hit results in a casualty, resolve a hit against the next model in the bolt's path each time a casualty is caused.