Mono-Blue Terror relies on cheap cantrips and counterspells to protect its graveyard-fueled Tolarian Terror and Cryptic Serpent, so Standard Bearer forces their targeted spells, like Deem Inferior and Sleep of the Dead, onto a cheap body instead of our real threats. Thraben Charm's damage mode kills Delver of Secrets and can threaten a transformed Delver, or a Tolarian Terror if we control enough creatures and can pay for its ward {2}. We cut Phyrexian Walker and Martyr's Soul, our lowest-impact cards here, for a faster, more resilient curve since this is a race where every turn matters against their countermagic. Dust to Dust and Holy Light stay boarded. They have no artifacts, so Dust to Dust has no good targets, and Holy Light's -1/-1 would hit their nonwhite creatures (Delver, Tolarian Terror and Cryptic Serpent) but is too small to matter against 5/5s and 6/5s.