For that, we've got Rogue's Passage , Manifold Key , and Whispersilk Cloak, which both make them completely unblockable
That said, if Atsu, Ghost of Yoitei is anything to base these cards on, chances are that the other Secret Lair Bonus Cards arent too exciting, either
3 Balan, Wandering Knight is a Bluntly Powerful Voltron Commander Balan, Wandering Knight is a simple but fun example of the "Voltron" strategy in Commanderthat is, load up the commander with Auras and equipment to turn it into an unbeatable attacker
In some unusual casesthough getting less unusual all the timea permanent will be comprised of multiple cards, such as a melded permanent or a mutated creature
Reboot Pod (158/162) Another card that takes advantage of a new subtype, Reboot Pod is different to Awakening Drum in that it utilizes the Future keyword, rather than Ancient