In a one-on-one setting, this land is unfortunately not the greatest, as the fewer players there are, the more limited you are to what mana you can tap for, but it is handy in other formats
They are kind of a package deal, and dear lord, are they about to bring blue control back in a big way
Typically, these sorts of decks are all about gaining incremental advantages while casting efficient instants and sorceries, and are most commonly in the Izzet color pairing
Compare to the beloved Werebear
The first secondary commander is Rayami, First of the Fallen, who plays into the creature-exiling profit whenever the exiled creature has basically any static ability by bestowing said creatures ability onto the keyword-thirsty vampire
The trick was to pull back a bit