There are plenty of different ways to take advantage of unblockable creatures, from loading them up with equipment, to enjoying free Ninjitsu triggers in your Ninjas deck
Therefore, I recommend that most Spellslinger decks contain some form of combo, even if its just a four-card combo with no tutors
As is often the case in limited, White is inclined towards aggressive strategies, with all of the signpost uncommons leading you that way
They're the celebration of a new set, and The Lord of the Rings: Tales of Middle-earth has its Prerelease from June 1622
Through the use of cards like Back to Basics and Rising Waters, Urza can greatly limit opponents' mana access while still being able to produce mana for its controller through the use of artifacts
As such, it lends itself very well to deck upgrades, but even if you forgo upgrading it, Limit Break is still a great deck to play with out of the box without any alterations