
Originally Posted by
Nihil Credo
The point is that blue decks can sideboard stuff that both helps against combo and other matchups. Which makes sense since combo is generally not a bad matchup for them. Trap may help a bit more against combo but you get more value out of sideboard slots spent on Counterbalance, Stifle, Trickbind, Misdirection, BEB, Meddling Mage, Divert, Counterspell, Cursecatcher, and so on.