Keep in mind this is before any tank talents or spell resistances are taken into account. In 25 man, that number goes up to 14,062. Sarth does an unmitigated maximum of 11,250 with his breath in 10 man. If I may, allow me to number crunch real quick. This buff provides almost complete immunity to damage and a 50% increase to fire and shadow damage dealt. Shadron's portal and disciple are important, seeing as they place a buff on Sartharion that normally gets placed on Shadron. See the links Sartharion's page for heroic and regular damage amounts.
This will affect Sartharion's breath ability, the lava waves, and the damage the little fire elementals deal. As seen in his abilities tab, he has an aura that will be applied to all members of the raid, increasing fire damage taken by 100%. He engages 75 seconds after Sartharion is engaged, which is 45 seconds after Tenebron is engaged. Shadron is the second drake to engage your raid if left alive. So I'm trying to add a consolidation of what I do know, and hope that others will maybe post some helpful links or assist me in providing some tips.
Comment by 12797I'm trying to gather information on how to do either or, but I haven't found enough info on the wowhead sight at the moment.