Randuin's Omen

+500 Health
+70 Armor

UNIQUE Passive - Cold Steel: When hit by basic attacks, reduces the attacker's Attack Speed by 15%.
UNIQUE Active: Slows the Movement Speed of nearby enemy units by 35% for 2 seconds (+1 second per 200 Armor and +1 second per 200 Magic Resist) (60 second cooldown).

(Unique Passives with the same name don't stack.)