Talk:Taric/Strategy/@comment-10836524-20130614054828

The math comparing Thornmail against Aegis of the Legion is wrong. Aegis gives a flat 10 armor aura to teammates on top of the 30 armor it gives to Taric (20 base plus that same aura). So buying Aegis gives allies 10+3,6 armor with Shatter's passive aura (30/.12=3,6), for a total of 13,6. Thornmail only gives 12 armor to teammates through Shatter's passive aura. 13,6 > 12. So even against a heavy AD team you're better off taking Aegis for both more armor and the extra perks. You'd only take Thornmail instead against a full AD team that's also focusing you for some reason.