balrog card mtg Cirith Ungol - The exile up to one target creature that player controls The Balrog, Durin's Bane

Weak board clearing options

In addition to their demand for Commander players, these two cards also both see play in multiple 60-card formats, so more than just Commander players will be very happy to open these two in their Wilds of Eldraine boosters

Taigam, Master Opportunist Taigam, Master Opportunist loves that second spell you cast on a given turn, so much that you get a free copy suspended for later

Do you think I left out any overlooked cards from Mirage

Finally, since the majority of your Ally triggers are based on creatures entering, there are a few ways to exile and return creatures in the form of Ephemerate, Eerie Interlude, and Ghostly Flicker

Command the Night With an Army That Refuses to Stay Dead