Mikael's Crucible is a legendary item in League of Legends. 
Cost Analysis *
Gold Value with passive regen
* base stats are 70% gold efficient, without the passive and active effects.
While having a lower health % than mana %, is 82. gold efficient.
5% While having a lower mana % than health %, is 90. gold efficient. 83%
is most effective versus enemy teams with a large amount of single target CC (excluding , suppressions and blinds effects).
airborne Obtaining the active ability effectively costs 570 , the active must be used to deny/obtain 2 kills (or similar value objectives) to justify its cost.
The passive stacks additively with and passives.
Total cost increased to 2400 from 2300 .
Combine cost reduced to 650 from 850 .
New Unique Passive: +15% bonus healing and shielding power.
Base mana regen increased to 150% from 100%.
Combine cost increased to 850 from 750 .
No longer grants Mana Font.
New Unique Passive – Harmony: Grants 100% base health regen per 5 seconds if your current health percentage is lower than your current mana percentage. Grants 100% base mana regen per 5 seconds if your current mana percentage is lower than your current health percentage.
Combine cost reduced to 750 from 950 .
Total cost reduced to 2300 from 2450 .
Magic resistance reduced to 35 from 40.
Combine cost increased to 950 from 850 .
Mana Font regeneration increased to 2% from 1. 5%.
Recipe cost reduced to 850 from 870 .
Mana regeneration changed to +100% of base mana regeneration per 5 seconds from +20 mana regeneration per 5 seconds.
New Recipe: + + 870 = 2450
Mana regeneration per 5 seconds increased to 20 from 12.
Now grants 10% cooldown reduction.
Recipe changed: + 720 = 1600
Total cost reduced to 1600 from 2500 .
Mana regeneration reduced to 12 from 18.
Health regeneration removed.
Recipe changed: + + 920 = 2500 .
Health regen increased to 7 per 5 seconds from 0.
Mana regen increased to 18 per 5 seconds from 9.
No longer grants mana.
Active heal changed to "Heals for 150 + 10% of the target's maximum health" from "Heals for 150 + 15% of the target's missing health" ; effect unchanged.
Active travel time changed to 0. 2 seconds from variable with distance.
Fixed an issue with the hit effect particle.
Can no longer target allied minions.
Recipe: + + 920 = 2200
Stats: +300 mana, +40 magic resist, +9 mana regen per 5 seconds.
Unique Passive – Mana Font: Increases your mana regen by 1% per 1% mana you are missing.
Unique Active: Removes all stuns, roots, taunts, fears, silences and slows on an ally and heals them for 150 + 15% of their missing health. 180 second cooldown.