original pokemon cards ebay 151 Set Complete - 100% Classic - ALL 45 HOLOS INCLUDED! or Paralyzed Pokemon Base Set Uncommon Raticate

Most of the time, your opponent won't even know what cards are in your sideboard, let alone which ones you'll choose to bring in for Game Two

That's makes this very synergetic, and I built a deck for your consideration here - Mastering Fear with Umbris | Article by Abe Sargent (coolstuffinc.com)

Often, the seller has a price in mind, so the first question I always try to answer is "are these cards profitable at the buyer's asking price?" For instance, a seller is asking $300 for their collection

You can use this to buff your own forces, or enable a smaller opposing creature to trade up if another opponent is attacking into it