Mikael`s crucible double dips on mordekaiser`s W.

Title, it increases healing and shielding by 20%, his heal is based on the shield strength so it is increased directly and indirectly.

Basically gives him a 1.425 healing multipliar on his W meaning he would heal from it more than if he had spirit visage (although spirit visage increases max health which raises the cap on his shield bar which is 30% of morde`s max health, so it does mean spirit might be better if mordekaiser can fill his bar quickly and the enemy doesnt have grevious wounds)

Also this multiplies WITH spirit visage, (spirit gives 30% more healing so basically 1.30 x 1.425)

All of this was tested in practice tool.

Is this information useful/is Mikael`s even worth buying? Yes if the enemy team has alot of magic damage and cc since crucible provides slow immunity and a speed buff for 2 seconds although you cant cleanse any cc that is harder than a root since you cant activate this item while stunned. But you should still buy visage before mikaels and only go mikaels if the enemy has 2+ magical damage dealers.