Full English Breakfast plays zero red spells or permanents, so Hydroblast is actually dead here — this swap does not fit and should be reconsidered. Given the deck's reliance on Hermit Druid and Survival of the Fittest to combo out with Phyrexian Devourer or reanimation targets, countermagic and disruption are your best tools, and your maindeck Counterspell and Arcane Denial suite already lines up well. Given no clean sideboard answers exist for this specific combo shell, the safest plan is a minimal adjustment, keeping the core counterspell suite intact rather than boarding in irrelevant cards.