Does Wildclaw Shaman buff itself to 4 power if you don't spend a buff to ready it?

Ruling: No, Wildclaw Shaman does not buff itself if you don't spend a buff. The parenthetical text is just clarification that a unit can generally only get buffed once, and if it already has a buff, nothing happens.

Nuances:

• Units can generally only receive one buff
• If a unit already has a buff, attempting to buff it again has no effect