As a Summoner, your pets are impeded by almost no form of barrier. The walls put up around the Mythril Verges spawned by Qarn NM's final boss, Adjucator may trap you or other players, but you can actually send your Egi to attack the Verge with a quick Sic or Obey and they will phase right on through or attack from afar, depending on the summon.
This also applies to the barriers put up around the Dark Clouds during that one phase in the Cloud of Darkness battle, where 3 clouds are put up in a triangle formation and explode at the end of their countdown. Though you can get trapped inside or outside, your Egis can once again attack or move right through them, allowing you to send aid to other players during the fight, and allowing you to relax should your Egi be off somewhere else when the walls go up.
This has saved my life and others on several occasions.
This also applies to the barriers put up around the Dark Clouds during that one phase in the Cloud of Darkness battle, where 3 clouds are put up in a triangle formation and explode at the end of their countdown. Though you can get trapped inside or outside, your Egis can once again attack or move right through them, allowing you to send aid to other players during the fight, and allowing you to relax should your Egi be off somewhere else when the walls go up.
This has saved my life and others on several occasions.
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In the Titan fights, position your Garuda Egi off in the furthest corner of the arena, where it is doomed to have the floor ripped out from underneath it. Not only is Garuda immune to landslides, but when the arena is shrunk, Garuda will remain hovering in mid air, allowing you to keep it from ever taking a hit, as it will end up out of range of Tumults and other nastiness. The only thing that will kill it is your death. However, you will have to reposition yourself a bit in order for your buffs and Enkindle commands to continue working, though not by much to be of any concern.---
The Summoner Burn is the ancient art of cheesing the hell out of a variety of instanced dungeons. It calls for four Summoners (or three and say, one healer, preferably a Scholar) using Titan Egis to beat the ever-loving shit out of enemies whilst you sit back and spam every spell in the book. This strategy was used back in the days when Philosophy Tomes were a thing, and the only good instances for farming were WP and AK. Although slow, the sheer amount of DoTs and the presence of four tanks and four DPS in an instance made for four people can be nasty. Obviously, nowadays, your mileage may vary, but for those Summoners out there who hate DPS queues, it's a nice (and mildly amusing) alternative. For best results, blast "Under the Weight" on repeat while you play.