Gluntch is a tricky commander to build around, because there's no outright downside to anything you give your opponents like in a lot of others

Aegar, the Freezing Flame Atarka Efreet Box of Free-Range Goblins Brain Freeze Brazen Freebooter Burning Palm Efreet Capricious Efreet Captain America, Wings of Freedom Carefree Swinemaster Cid, Freeflier Pilot Deep Freeze Desdemona, Freedom's Edge Efreet Flamepainter Efreet Weaponmaster Eiganjo Free-Riders Fickle Efreet Flashfreeze Free from Flesh Free-Range Chicken Free-for-All Freed from the Real Freedom Fighter Recruit Freejam Regent Freelance Muscle Freestrider Aces Freestrider Commando Freestrider Lookout Freewind Equenaut Freewind Falcon Freeze in Place Frenetic Efreet Frenetic Efreet Avatar Glimpse of Freedom Goblin Freerunner Greedy Freebooter Hada Freeblade Harmattan Efreet Ifh-Bff Efreet Jet, Freedom Fighter Junn Efreet Kitesail Freebooter Nezumi Freewheeler Price of Freedom Rainbow Efreet Serendib Efreet Shimmering Efreet Silvar, Devourer of the Free Smoldering Efreet Spider-Gwen, Free Spirit Tempest Efreet Topan Freeblade Treetop Freedom Fighters Trynn, Champion of Freedom Uktabi Efreet White Widow, Free Agent Ydwen Efreet

For example, Convolute cast targeting Eternal Scourge wont cause its ability to trigger
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Whenever Omnath or another Elemental you control dies, Omnath deals 3 damage to any target
Phantom Gate can be used to copy utility attacks that normally require several different energy types