Entomb and the fixed version of it, Unmarked Grave, are far more flexible, allowing you to set up spells with flashback like Past in Flames, additional static benefits through cards like Riftstone Portal, or simply open up more targets for you to recover through an Eternal Witness
You also gain 2 life by the by as if that were needed, and that's a very powerful free adjunct
The treasure-making effect alone makes Kenway a decent choice to slot into existing pirate commanders, namely both versions of Admiral Brass
If you pay for each, two new combat phases will be created
A few years ago, there was a brief and glorious moment when Mastery of the Unseen was all the rage, leading to some absurd board states like this
Its unorthodox, but a great way to showcase this incredible art