The Ice Sceptor has the following property:
Property: You gain a +2 item bonus to the damage rolls of cold attacks made with this implement.
One of the spells that the wizard casts creates a sustainable area of effect 2 zone of cold that deals 5 damage when creatures start their turn in the zone.
Does the Ice Sceptor's damage modifier modify the zone's damage? (thus making it 7 cold damage instead of 5 cold damage per turn in the zone)
What about feats that modify damage do they affect zones without specifically stating so?