For example, if you cast Junkblade Bruiser (a creature with a mana value of 5 and an ability that triggers whenever you expend 4) by paying its full cost of five mana, you'll already have spent four mana on spells before Junkblade Bruiser enters, and therefore its ability that triggers whenever you expend 4 won't be able to trigger at all that turn.
While tempo decks do want to play on the front foot and be the one swinging sideways, it is also important to be able to play defensively when youre behind
This set of cute woodland critters gave us the class card Caretaker's Talent, a ridiculously powerful source of card draw which saw its own big price jump
Floodgate This requires you to run basics, but if youre running a Thassa, Deep-Dwelling blink deck, Floodgate is a pretty nice repeating wrath
It's not for nothing that ST10-001-trafalgar-law and ST10-002-monkeydluffy are and has been very relevant in the current meta of OP07 in Japan and the West currently respectively
Now that extra caveat is out of the way, its time to talk about Palantir of Orthanc properly