Magic 2012 — Uncommon
Kraken's Eye rulings:
10/1/2009 : The ability triggers whenever any player, not just you, casts a blue spell.
10/1/2009 : If a player casts a blue spell, Kraken’s Eye’s ability triggers and is put on the stack on top of that spell. Kraken’s Eye’s ability will resolve (causing you to gain 1 life) before the spell does.