How to buff all tank items without breaking them...
As the title says...
:
Unique Active: Decaying removed; the shield is now static and lasts for 10 seconds or until destroyed. Scaling increased from 20% bonus health to 20% max health
:
Armor increased from 80 to 200
Health increased from 250 to 500
Unique Passive (Thorns): Damage increased from 25 (10% bonus armor) to 12% of the target's maximum health in true damage (20% bonus armor)
damage changed to 6% of the target's maximum health in true damage (no scaling)
Unique Passive (Cold Steel): Attack speed reduction changed from 15% to 50%
:
Health increased from 425 to 600
Armor increased from 60 to 100
Unique Passive (Crushing Blow): Damage increased from 100 magic damage max stacks to 12% of the target's current health in magic damage upon reaching max stacks
:
Armor increased from 40 to 80
Health increased from 250 to 500
New Unique Passive: When your partner falls below 40% health, they become immune to all physical and true damage for 6 seconds and instead will reflect any physical or true damage back to you.
:
Armor increased from 60 to 100
Health increased from 425 to 600
Unique Passive (Immolate): Damage increased from 26-43 magic damage (per level) to 100 true damage all ranks; bonus minion/monster damage increased from 50% to 150%
damage changed from 6-23 magic damage (per level) to 50 all ranks; bonus minion/monster damage increased from 100% to 150%
:
Armor increased from 100 to 200
New Health added: 800
Unique Passive: Attack speed reduction increased from 15% to 80%
:
Armor increased from 60 to 100
Health increased from 400 to 600
Unique Passive: Critical strike reduction increased from -20% to -60%; grants immunity to all true damage
Unique Passive (Cold Steel): Attack speed reduction increased from 15% to 50%;
Unique Active: Slow increased from 55% to 70%.
By buffing tank items by this much will allow them to be near unkillable by AD champions - especially with how weak 
is. He is deserving to be an unkillable tank.
passive changed to - deal 99% of the target's current health as true damage. You can only do damage with this passive. (the damage always rounds down btw meaning that if you should do .9999 damage it will instead do 0 damage)
