Old:
Death Strike
1 Unholy, 1 Frost
Focuses dark power into a strike that deals 135% Physical damage and heals you for 1. (Healing based on 400% of your Attack Power, according to WoWhead)
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New:
Death Strike
40 Runic Power, Melee Range, Instant
Focuses dark power into a strike that deals strong Physical damage and heals you for 50% of all damage taken in the last 6 sec (minimum 7% of maximum health).
If you are below 35% health when this is cast, all Runic Power is consumed, increasing the potency of the healing effect.
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Correct me if I'm wrong, but isn't the bolded part a heavy nerf to the soloing capabilities of DKs? Of course they don't balance classes around soloing, but I think it's still worth mentioning/discussing since A LOT of people hold on to a DK for the sole purpose of clearing instances.