Sheppard of Man

Sheppard of Man enters the battlefield tapped.
{t}: Add {r} or {w} to your mana pool.
{w}: Until End of Turn Sheppard of Man becomes a 0/1 Dragon Creature with defender and retribution (Whenever a creature you control dies, if it wasn’t sacrificed, put a +1/+1 counter on this creature.) It is still a land.
{r}{r}: Sheppard of Man loses defender and gains flying until end of turn.