How do C'Thun's buffs work if I Entomb it?

I have 2 scenarios, per the following.

I am playing a standard control Priest deck (without C'Thun) vs a C'Thun Druid.

Case 1:

He keeps buffing his C'Thun until turn 10, when I Entomb it. What happens if he plays more C'Thun buff cards? Does it keep buffing his C'Thun that I Entombed?

Case 2:

Same as case 1, with the difference that I have C'Thun in my deck, too. When the druid plays more C'Thun buff cards, which C'Thun will get buffed (if any, or if not both)?

hearthstone

Best Answer

C'thun buffs are treated as buffs to the player, in a similar fashion to Dalaran Aspirant's Inspire-based Spell Damage. Once you Entomb the enemy's C'thun, they have no C'thun in their deck (barring shenanigans with Unstable Portal, Thistle Tea, or the like), and their minions will no longer provide any effective buffs. (If they do have another C'thun, they will continue to buff it.)

Unless you have previously buffed your own C'thun, the Entombed one will also not benefit from their aura and will revert to 6/6.