Knight's Vow

Best on a tank support babysitting a carry — Taric or Braum with Vayne. Skip it on an enchanter support — Redemption is better.

Stats

Max Health+400
Armor+40
Ability Haste+10

Passives

Pledge
When you buy the item, you can designate an ally champion who is Worthy. (You can re-designate another champion by selling and repurchasing the item)
Sacrifice
When your Worthy ally is nearby, 12% of the damage they take is redirected to you, and you are healed for 10% of the damage they deal to champions.

Description

Pledge: When you buy the item, you can designate an ally champion who is Worthy. (You can re-designate another champion by selling and repurchasing the item) Sacrifice: When your Worthy ally is nearby, 12% of the damage they take is redirected to you, and you are healed for 10% of the damage they deal to champions.

Who builds it

From WildPick's recommended builds

AlistarCore path
BlitzcrankCore path
BraumCore path
LeonaCore path
MaokaiCore path
NautilusCore path
OrnnCore path
PoppyCore path
RellCore path
ShenCore path
ThreshCore path

SustainUtility