The ironic thing about Delve is that the longer
the game goes, the cheaper Delve cards get, but
it doesn't matter because at that point you have
the mana to cast them anyway. But with Treasure
Cruise, it DOES matter, because you can spend
the mana you saved by Delving on casting the
cards you just drew. Big creatures like
Tombstalker are worth trying to cheat out early
with self-milling, but for this I'd say the best
plan is simply to put it in a deck with a lot of
instants and sorceries and fill up your 'yard
naturally with it. In the late game, this could
be three cards for one mana-- don't even tell me
a control deck wouldn't jump on that.
Today's card of the day is Treasure Cruise
which is an eight mana Blue sorcery with Delve
that allows you to draw three cards. Compared to
the also current Jace's Ingenuity at five mana
this requires two cards to exile to even equal
the casting cost and more to be lower.
Ingenuity being an instant gives it more value
in most situations by allowing it to be cast at
the end of an opponent's turn. Overall it
is unlikely Treasure Cruise will see much play
outside of self-milling themes as the value is
very situational compared to more versatile
options.
In Limited this is a late game source of card
drawing that can easily change the course of a
game, though including it with other Delve cards
limits the potential of each slightly. In
Booster this is a worthwhile on color pick
around fourth or later in the pack while for
Sealed it can be added to many decks using Blue
without much risk.