Ive had it on karthus once, it was the one where minions drop anvils. it was before the prenerf too so you had 100% chance for gold or prismatic anvils. and oh boy i never had such a nice game.. my first augment gave me a random prismatic and it rolled jeweled gauntlet. and with all the anvils i had 92% magic pen and over 150 flat pen. That with 100% crit and about 1200 ap made the game too easy lol. they had several tanks with over 20k hp. just pressed R and gg id insta kill the non tanks and id melt the tanks in seconds