User blog comment:Slashingstrike/AP Item for Tanks/@comment-26815373-20161025181520/@comment-3391671-20161026033337

I get this feeling that there should be an uncommon version of this item, just like how other items has their own child ...

I agree with Double Slap that "Undying Heart" works just fine. And just as you say LBP, (the numbers may need tuning but) numbers can be tweaked.'

And if you do not mind my usual spiel of gold efficiency, Slashing, as Healingmantra has mentioned, I too believe that 2900 for this may be much too cheap.
 * x =
 * x =
 * 10% cooldown reduction x =
 * Base stats =
 * First Passive:
 * x =
 * (for every ) with per  =  is worth an additional
 * Firs Passive = (+  per )

Even without the second passive, Undying Heart is already (/= ) gold efficient. This would then be overly gold efficient with that second passive, so I recommend lowering both the damage and healing on the second passive by 2.5% (to 17.5% and 12.5%, respectively). Lowering the base stat's by 5 or 10 may be an alright idea, but it's not required.