Relief for mana-starved retribution paladins

[Kwayver]

Add the following to the Two-handed weapon specialisation talent in the ret tree:
restores mana equal to 2%/4%/6% physical damage caused.

This will allow ret paladins to sustain their mana while dpsing in dungeons and raids without causing holy or prot to abuse the mechanic (being that deep in the ret tree would make it undesirable for them anyway) while keeping Holy Strike as a 'mana dump' only used when in a surplus of mana

[Reploidrocsa]

I like it, it could be considered after 1.16 class changes