The only way theyll be getting their commander back is by removing the enchantment (something Ive found not enough players are accounting for), sacrificing the creature (easier to do but still a pain), or blinking it to force the Aura to fall off
Both paths through Tomb of Annihilation feature room effects which should cause a Sefris trigger from discarding or sacrificing creatures (including tokens), but if Sefris was already the reason we were venturing in the first place her once per turn stipulation means we cant take advantage
Usually this is overkill for finding whitening but more important for tighter grading companies
Frank Karstens build, which he piloted to a Top 16 finish in Costa Rica, relies heavily on Jaces Sanctum: Lands (24) 20 Island 4 Sunken Hollow Spells (36) Jaces Sanctum is really great in this deck but opens up a vulnerability to Dromokas Command
Its devastation in a turn cycle is only beaten by Jin-Gitaxias, Core Augur, but that demands more mana which is a pretty large setback
But, lets be honest, thats pretty negligible