Hey I need help on this quest. Every time I get close to the Seer, he dies from the monster triple teaming him. Can you guys tell me what a good strategy is for the quest?

High mobility and speed helps, but most of it really is luck-based. Ideally, Roye (I think that's his name) will run into the corner of the map beside the urn so he can only get attacked one at a time. You should be able to get to him and heal if necessary if he does.

get a paladin, give him ninja tabi and have someone cast haste on him, make him rush directly to the seer and use cover. if you can accomplish this before the idiot seer gets himself killed, you'll have it in the bag.... unless your paladin sucks.

use far hitting units