[svn] Rune: Reflection Shield lasts longer than 5 turns

[Tyren]

Mine says it's 5 turns and i get 7 turn shield.

[azrael]

Are you an archmage? They have a talent that increases shield duration.

Also, as an instantaneous move, the counter should always be at at least six (I think).

[5k17]

According to the code, it should last 6 turns (and therefore display 7 immediately after activation); either that's a mistake or the description needs to be changed.