For better or worse, this particular copy isnt going to greatly enhance Yoshimarus availability
Dragonfly Swarm Usually, a card like this would care about only instants and sorceries, but that little extra bonus, plus ward, plus a chance to draw you a card if it dies, makes this the backbone of a spellslinger strategy, if standard has enough other cards to prop it up
The basic complaint is simple
This has two-for-one potential, though it isnt always going to be accessible
So the deck is about Noncreature spells, and the commanders care a bit more about High Mana Value but it's not a main focus of the deck, and there's a bunch of minor cute subthemes that play off our main theme and commander
(Scryfall note, 2017-04-17) Vial Smasher's triggered ability triggers when you cast your first spell each turn, regardless of whose turn it is