The corruption stirred the heavens above, awaking a shining champion.

Victory's Herald

Flying
Whenever this creature attacks, attacking creatures gain flying and lifelink until end of turn.

Commander Anthology Volume II

Flying
Whenever Victory's Herald attacks, attacking creatures gain flying and lifelink until end of turn.

Welcome Deck 2017

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever Victory's Herald attacks, attacking creatures gain flying and lifelink until end of turn. (Damage dealt by those creatures also causes you to gain that much life.)

Commander 2015

Mirrodin Besieged

Even though the triggered ability affects only attacking creatures, the bonuses will remain for the rest of the turn.

Victory’s Herald also gains flying (which will likely be redundant) and lifelink if it’s still attacking when the ability resolves.