Kael'thas Nerf

Kael'thas Nerf is a Hearthstone patch released on Aug. 18, 2020. It was versioned 18.0.2 with the build number 56359. It was released during the expansion Scholomance Academy

Card Changes

Kael'thas Sunstrider - Every third spell each turn costs 1 (up from 0).
Mindrender Illucia - Cost increased to 3 (from 2).

Quote From Blizzard

In the coming days we’ll be releasing a balance patch that includes a slew of Battlegrounds updates, adjustments for two minions in Standard, and handful of bug fixes.

Standard Balance Updates
Kael’thas Sunstrider

Old: Every third spell you cast each turn costs (0). → New: Every third spell you cast each turn costs (1).

Mindrender Illucia

Old: [Cost 2] → New: [Cost 3]

Mindrender Illucia will be eligible for a full dust refund for two weeks after the 18.0.2 patch goes live.

Battlegrounds Minion Updates

Gentle Megasaur has been removed from the Battlegrounds minion pool.

Arcane Cannon has been removed from Battlegrounds minion pool.

Rabid Saurolisk

Old: 3 Attack, 2 Health → New: 4 Attack, 2 Health

Rat Pack

Old: [Tier 2] → New: [Tier 3]

Pack Leader

Old: [Tier 3] → New: [Tier 2]

Monstrous Macaw

Old: 3 Attack, 2 Health → New: 4 Attack, 3 Health

Primalfin Lookout

Old: [Tier 5] → New: [Tier 4]

Now only Discovers minions from your current Tavern Tier or below.

Nat Pagle, Extreme Angler

Old: Overkill: Summon a 0/2 Treasure Chest. → New: After this attacks and kills a minion, add a random minion to your hand.

Minions generated are from your Tavern Tier or below.

Mama Bear

Old: [Tier 6] 5 Attack, 5 Health. Whenever you summon a Beast, give it +5/+5.→ New: [Tier 5] 4 Attack, 4 Health. Whenever you summon a Beast, give it +4/+4.

Goldrinn, the Great Wolf

Old: Deathrattle: Give your Beasts +4/+4. → New: Deathrattle: Give your Beasts +5/+5.

Battlegrounds Hero Updates

Lady Vashj has been removed from the Battlegrounds Hero pool.

Captain Eudora

Buried Treasure

Old: Dig for a Golden minion! (4 Digs left.) → New: Dig for a Golden minion! (5 Digs left.)

Reno Jackson

Gonna Be Rich!

Old: [Cost 2] → New: [Cost 0]

The Lich King

Reborn Rites

Old: [Cost 1] → New: [Cost 0]

Galakrond

Galakrond’s Greed

Now freezes the minion added to Bob’s Tavern.

Bugs Fixes & Game Improvements

Fixed a visual bug with Archwitch Willow’s play animation.

Fixed a bug where Southsea Strongarm was showing incorrect art.

Fixed a bug where casting Puzzle Box of Yogg-Saron with Rattlegore on board would cause the game to freeze.

Fixed several technical bugs that would cause the game to crash.