Along with synergising with Up the Beanstalk (more on that later), the Whale provides powerful early removal while late game becoming a finisher thats hard to deal with, thanks to its flash ability enabling you to drop it at the end of your opponents turn, and Ward 2
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Other ramp options this deck runs are Deathrite Shaman and Birds of Paradise, which, unlike mana rocks, are susceptible to removal but help fix your mana in the early stages of the game
Of the promo cards worth over $100, the majority are either special foil reprints issued as rewards to tournament judges for their work on the game, or extremely limited promos sold exclusively at San Diego ComicCon
As such, you've got to carefully time when and where to put down Energy
In most instances, Exiling a card still gets rid of it for good