Does Wielder of Water get the +2 bonus when attacking an empty battlefield?

Ruling: Wielder of Water gets the +2 bonus when moving to an empty battlefield. Moving to an open battlefield starts a showdown but not a combat, so Wielder of Water has 2 power.

Nuances:

• A showdown occurs when moving to an empty battlefield, but the combat step does not open
• The attacking/defending labels are assigned during the showdown phase, not the combat phase