Hearthstone BBU Control Death Knight Deck Guide

A Blood-Blood-Unholy (BBU) Control Death Knight pairs the defensive maximum-health expansion of Blood with the cheap token generation of Unholy. This build solves traditional control passivity on the Standard ladder by securing early trades and fueling Corpse-hungry spells before aggressive opponents can overwhelm your life total.

BBU vs. Triple Blood (BBB) Rune Allocation

Splashing a single Unholy rune replaces Triple Blood late-game finishers like Alexandros Mograine and Soulstealer with low-cost board presence. In exchange, you retain access to Vampiric Blood while removing the vulnerability to fast board swarms that plagues pure Blood builds on turns one through four.

Early-Turn Priority and Corpse Accumulation

Without Corpses, your Blood removal and sustain cards lose their enhanced effects. Establishing a Corpse foundation in the opening turns is mandatory for survival.

1. Open with Plagued Grain on Turn 1: Playing Plagued Grain immediately summons a 2/2 minion and seeds your deck with crates that supply four additional Corpses over subsequent draws.
2. Cycle Without Spending Corpses on Turn 2: Play draw and cycling cards such as Prize Vendor, or use basic removal to slow the board. Do not expend Corpses on small tempo buffs.
3. Absorb Incoming Face Damage with Minion Trades: Use your early 2/2 and 1/1 tokens to initiate trades into aggressive one-drops and two-drops. Preserving your base life total avoids premature defensive commitments.
4. Bank Three to Four Corpses by Turn 4: Reaching this threshold prepares your hand for empowered mid-game survival spells as larger opposing threats enter the board.

Mid-Game Stabilization and Resource Discipline

Vampiric Blood anchors your survival, but casting it un-empowered drastically reduces its efficiency.

• Delay Vampiric Blood for Corpse Activation: Do not cast Vampiric Blood on turn three simply to cycle through your deck. Wait until you have the required Corpses to unlock the full health amplification and card draw, pushing your hero's maximum health pool toward 45 or higher.
• Bait Opponent Overextension: Calculate whether your life total can absorb one round of chip damage before playing an area-of-effect clear. Forcing aggressive opponents to commit additional resources into your removal creates decisive card-advantage swings.
• Spend Corpses Only on High-Impact Removals: If a play consumes Corpses without neutralizing a major threat or stabilizing a lethal board state, conserve the pool.

Standard Ladder Mulligan Strategy

A disciplined opening hand prevents you from getting stuck with reactive, high-cost cards against fast decks.

• Always Keep: Plagued Grain, early single-target removal, and low-cost draw options.
• Conditional Keep: Vampiric Blood is worth holding against aggressive classes only if Plagued Grain is already in your opening hand to ensure Corpse activation.
• Always Toss: High-cost late-game clears and expensive value cards that cause you to float mana during the opening turns.