I havent yet investigated the true ceiling of combo potential with this and pre-existing graveyard cards, but within the context of this precon, Convergence of Dominion is most useful for discounting your various Unearth costs
Imskir will also fit quite nicely into decks helmed by other commanders if they care about artifacts
For 2WBG, you may exile Bilbo (or put him in the command zone if hes your commander) and search your library for any number of creature cards and put them onto the battlefield
Finally, we get to see Tritons trident (oh hi Pete)
These are words we are used to putting together in English, and I bet there are a ton of phrases written down somewhere at WOTC in an Excel sheet for potential future split card names, like Thunder and Lightning, Rock and Roll or maybe even Fast and Furious
And even the placement of the signature on the card is something thats intentional