Mir and I were talking about this yesterday. It's possible to cycle through your pets to keep up all the useful debuffs at once. link
If you look at the screenshot posted by myic90, he is summoning a pet, using its debuff, then dismissing the pet, summoning the next pet, etc. He's using the superchrono plugin to track when his debuffs will expire. He also has an alias mapped to the 1 key, which is most likely a shortcut to dismiss pet. Stuff like this can make loremaster one of the more difficult classes to play well, but if you can master it, you'll be a huge help to your group.
Gnix: Anice will doom us all! I feel bewitched!
Gnix: Anice spoiled us all!
Anice: 2/18/19 - First completion of Anvil T1!
Joel: I will be on Anor for most of today. If anyone is on the Legendary Server and would like to be a part of the kin on there, send a /tell to Shasta.
Anice: Made it through boss 1 of Thikil T3 a little while ago as well! I'm calling that a win :)
Celordal: Bitz, Cel, & Maghir completed T2 Thrumfall a couple of days ago!
Celordal: Bitz, Cel, & Naffan completed Glimmerdeep T3 tonight!
Celordal: First kin completion of Thikil T2 tonight!
Joel: RunicKnights has now been set up on Ithil!
Celordal: Thanks to Salyia & Asterus for your help in completing Glimmerdeep T2!
Ootinni: You can't handle TotDT t2c!
Greatli: Lets do Throne of the Dread Terror T2 Guys!
Celordal: Got the gate open in Abyss T2 on Sunday August 12th!
Celordal: Runic Knights had our first successful Abyss T1 clear on July 22, 2018!
Runikid: Hiya all I hope all is well and I wish you all Long days and plesant Knights!
Nenro: Thank you very much Rosa! :-)
Rosalindia : you can get to the site again through the original domain name