PASSIVE - You permanently gain 7 Mana per Stack, and receive 5 Stacks for a god kill and 1 Stack for a minion kill (max. 75 Stacks). You gain Magical Power equal to 4% of your Mana from items. At 75 stacks this item Evolves, gaining 10 Magical Penetration and Increasing the Magical Power gained from Mana to 7%.
Obsidian Shard
+80
Magical Power
+20
Magical Penetration
PASSIVE - Your first ability cast gains 20% Magical Penetration. This can only occur once every 10 seconds.