- December 29, 2022
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Hearthstone Death Knight Runes explained | Blood, Frost & Unholy

You may have noticed the colored symbols around the mana costs of some Death Knight cards. These are called Runes. There are three Runes, one for each Death Knight spec: red is Blood, blue is Frost, and green is Unholy. These Runes dictate which Death Knight cards can be added to your deck during deckbuilding.
When building your deck, you select a combination of three Runes, which determines which Death Knight cards you can add to your deck. You can choose to fully devote to one Rune (such as triple Blood) or you can go primarily into one Rune, while dipping into another (such as double Unholy, single Frost). This Rune system allows for incredibly varied and powerful Death Knight cards, while making sure any particular deck isn’t just the best at everything. Instead, each of the Runes specializes in certain types of cards and effects.
Blood Rune
The Blood Rune is the tankiest Rune. Blood cards tend to have board control effects, large minions, and cards that manipulate life totals.
» Blood Death Knight Decks
- “Reno” Blood Death Knight #15 Legend – G2Thijs (Score: 13-2) January 23, 2023
- Renathal FFB Death Knight #237 Legend – Stinzy_ (Score: 9-4) January 5, 2023
- Renathal Blood Death Knight #192 Legend – XephoHS January 5, 2023
- Reno Blood Death Knight #315 Legend – onescoop January 5, 2023
- Reno Renathal Blood Death Knight #452 Legend – Loganbro1203 January 4, 2023
Frost Rune
The Frost Rune has powerful burst potential. Frost cards tend to have lots of spell synergies, with direct damage, card draw, mana manipulation, and Freeze effects.
» Frost Death Knight Decks
- Frost Death Knight #105 Legend – Helve187_HS January 25, 2023
- Frost Death Knight #285 Legend – akatsu94 January 8, 2023
- Frost Death Knight #224 Legend – MakaveliHS88 (Score: 44-19) January 3, 2023
- Frost Death Knight #4 Legend – Ike__HS January 2, 2023
- Frost Death Knight #8 Legend – LovelyDuke_HS January 1, 2023
Unholy Rune
The Unholy Rune has the greatest command of the Undead armies. Unholy cards tend to be very good at summoning Undead minions, summoning swarms of minions, and generating and spending Corpses.
» Unholy Death Knight Decks
- Unholy Death Knight #34 Legend – BabyBearHS February 1, 2023
- Unholy Death Knight #100 Legend – BabyBearHS (Score: 12-2) January 31, 2023
- Unholy Death Knight #58 Legend – OtsunaFR (Score: 12-4) January 31, 2023
- Unholy Death Knight #123 Legend – Doc_Delight January 30, 2023
- Renathal Unholy Death Knight #41 Legend – Lee1k2 December 22, 2022
Combination
In total, there are 10 possible Rune combinations:
- 1 Blood, 1 Frost, 1 Unholy
- 2 Blood, 1 Frost
- 2 Blood, 1 Unholy
- 2 Frost, 1 Blood
- 2 Frost, 1 Unholy
- 2 Unholy, 1 Frost
- 2 Unholy, 1 Blood
- 3 Blood
- 3 Frost
- 3 Unholy
Source: PlayHearthstone Blog