As long as you can consistently get both effects of this spell, it should be an asset in any casual Commander deck
Wizards has announced that MDFCs will be a theme in 2021s Standard sets, so keep an eye out for exciting new designs

Advanced Search Sets Random Syntax Alchemist's Gambit All in Good Time Alrund's Epiphany Avatar Kuruk Beacon of Tomorrows Capture of Jingzhou Chance for Glory Emrakul, the Aeons Torn Emrakul, the Promised End Eon Frolicker Expropriate Final Fortune Frenetic Efreet Avatar Gerrard's Hourglass Pendant Gonti's Aether Heart Holy Armor Howling Mine Ichormoon Gauntlet Kang the Conqueror Karn's Temporal Sundering Last Chance Lighthouse Chronologist Lost Isle Calling Magistrate's Scepter Magosi, the Waterveil Medomai the Ageless Mu Yanling Nexus of Fate Notorious Throng Otaria Part the Waterveil Perch Protection Phone a Friend Plea for Power Power Leak Ral Zarek Regenerations Restored Rise of the Eldrazi Sage of Hours Savor the Moment Search the City Second Chance Seedtime Stitch in Time Stranglehold Sylvan Library Teferi, Master of Time Teferi, Timebender Temporal Extortion Temporal Manipulation Temporal Mastery Temporal Trespass Time Bends to My Will Time Sidewalk (playtest) Time Sieve Time Vault Time Walk Time Warp Timesifter Timestream Navigator Trouble in Pairs Twice Upon a Time Twice Upon a Time Ugin's Nexus Ultimecia, Omnipotent Walk the Aeons Wanderwine Prophets Warrior's Oath Wormfang Manta

Sixteen new cards in one precon is a real number, and new to Magic Commander cards have a track record of climbing once EDH players find the ones that matter
Because of Quintet's effect he does NOT get destroyed during the end phase
First, all the strengths of Chainer, Nightmare Adept apply here