This is less likely to happen for "Metalflame Swordsman" due to the greater quantity of search targets
The 7-day trend shows whether that reference moved up or down during the past week when enough recent data is available
Time Warp is the best for its mana cost, Temporal Mastery makes your early game more explosive and is fine late, Walk the Aeons allows you to chain together multiple turns off one card when you need it, Temporal Trespass can be absolutely clutch when you need to both Time Walk and play another Howling Mine effect, and Part the Waterveil is your win condition
The set contains 67 cards: 10 Ultra Rares 15 Super Rares 42 Rares In addition, 15 cards in this set are also available as Collector's Rare
With the sheer amount of options, its very easy to feel choice paralysis when deciding what deck you want to play with
It's also a nice use of excess mana, which is always a good thing