Ravlin, Oath of Vengeance

Vigilance

{r}{w}{w}: Radiant Soul —If this creature isn't
radiant, put 2 lifelink counters on it and it
becomes radiant.

As long as Ravlin is radiant and has 1 or more
lifelink counters on it, it has flying, "When
Ravlin attacks, it gets +3/+0 until end of turn",
and "At the beginning of your upkeep, remove
a lifelink counter from Ravlin."