As always, 4story Gold players must never let your pet die. If low, always remember to heal. If it looks like it's about to die, use Sacrifice, killing your pet for 6 seconds of invinciblility. If you can't do enough in those 6 seconds, kiss your heiny good-bye. Also, both of the level 24 summon skill pets have a stun ability. Try to use those as early as you can, and use your aoe whenever they are stunned, slow, etc. The Silence skill helps a LOT on priests, disabling their heal and invincible skills.The Summoner probably has the latest full-damage AoE skill out of the caster classes. They get the Judgement of Nature skill at level 26. Though the grind may seem long, don't worry. If you're like me, tough it out, and you will be greatly awarded.Pet's movement speed: Yeah, your pet will move at the speed of smell while you're mounted. Nuff said.