The AI will use buffing cards on some of your minions

[culinko]

The Crone (Karazhan boss) will use buffing cards (Mark of the Wild, Seal of Champions or Blessing of Kings) on some of your minions, such as Healing Totem, Mad Scientist, Wild Pyromancer, Kindly Grandmother or Dreadsteed.

• https://www.reddit.com/r/hearthstone/comments/4yhbsl/wicked_witch_heroic_ai_at_its_best/
• https://www.reddit.com/r/hearthstone/comments/4yj2yw/more_evidence_of_impeccable_blizzard_ai/
• https://www.reddit.com/r/hearthstone/comments/4yok7u/i_know_the_ai_is_terrible_but_this_takes_it_to_a/
• https://www.reddit.com/r/hearthstone/comments/4ygtve/the_crone_bugged_out_and_started_buffing_my/
• https://www.reddit.com/r/hearthstone/comments/4yp3jd/the_crone_is_a_little_bugged/
• https://www.reddit.com/r/hearthstone/comments/4yibe7/seems_we_have_a_new_kelthuzad_bug_in_kharazan/

[culinko]

Is this reated? Innkeeper Druid (basic) will also use Mark of the Wild on your minions (happened in 7.0):

[Patashu]

Another report, with Blessing of Kings Innkeeper https://us.battle.net/forums/en/hearthstone/topic/20752635236

[judge2020]

Stormwind using blessing of kings on Sylvanas https://www.reddit.com/r/hearthstone/comments/61333s/bug_on_this_weeks_brawl/

[troggnostupidhs]

Steel Sentinel used Blessing Of Kings on my minion

[troggnostupidhs]

https://us.battle.net/forums/en/hearthstone/topic/20757646300