FlashfreezeremovalBudget$0.10A cheap color-hate counterspell that specifically answers red or green spells at instant speed, filling the same sideboard-style role as Douse.
Hydroblastremoval$2.77Efficient blue interaction against red spells and permanents. It is more flexible than Douse in what it can target, though it is a spell rather than a reusable enchantment.
Blue Elemental Blastremoval$4.37Classic anti-red interaction that can counter a red spell or destroy a red permanent. It serves the same matchup-specific purpose as Douse at a lower upfront cost.
Annulremoval$0.42A cheap blue answer to problematic noncreature permanents, often used in the same narrow matchup-oriented way as Douse even though it hits artifacts and enchantments instead of red spells.
Dream Fractureremoval$0.17A clean blue counterspell with broad application. It is not color-specific, but it fills the same general control slot at a comparable mana value.
CancelremovalBudget$0.10Baseline unconditional counterspell in blue. It is broader than Douse but occupies the same defensive role in slower control decks.
Essence ScatterremovalBudget$0.05Another efficient blue reactive spell for stopping creatures. While not red-specific, it is a similar 2-mana permission spell for controlling the board.
Negateremoval$0.54A flexible blue counterspell for noncreature spells, often chosen in sideboards for narrow interaction. Like Douse, it is a targeted answer that trades breadth for efficiency.