Talk:Malphite/@comment-37.6.39.49-20120828133443/@comment-213.137.108.158-20120828184314

Oh, ffs - read the description:

Effects: +75 armor +350 health +25 health regeneration

Passive: Unique: +5% cooldown reduction Unique: 20% chance on being hit by an auto attack to slow the attacker's movement and attack speed by 35% for 3 seconds.

Active: Unique: Slows movement speed and attack speed of surrounding units by 35% for 1 seconds + 0.5 seconds for every 100 armor and magic resistance. 60 second cooldown. (500 Range)

So for the only thing the second Randuin's Omen provides is the armor, health and hp regen.

Only items that do not have the "Unique" attribute can be stacked efficiently (cost wise) HOWEVER that does not imply that stacking them will always be a good idea. For example - will stacking 2 BT or getting a BT and a LW make you more effective vs an armor stacking team...