[Snake]

That could be pretty decent. Incoming Braum! This is pretty necessary because shields do nothing but reduce your damage output sharply, and make you vulnerable for easy vorpal strikes.

Though, maybe a fourth talent that requires Posture, dubbed "Deflect":

Perseverance (5 Ranks) - Increases Status Resistance by SR * 2% when using a Shield. Doubled when Guarding.
Block (5 Ranks) - Increases Armor and Magic Armor by SR* 1 when using a shield, doubled when you are guarding.
Posture (3 Ranks) - Grants a chance equal to SR* 8% that you will ignore knockdown/knockback attempts while guarding, while using a shield.
Deflect (5 Ranks) - You may retaliate 5% * SR of the damage taken to the causer while guarding, at the same chance of Posture.

Just for the 'rule of 4' thing all talents have at the moment.