Rod of Lordly Might

Enchant creature you control. It gains +1/+0.
You may activate one of the following effects:
{r}: Enchanted creature gains +3/+3
{w}: Enchanted creature gains Vigilance
{g}: Enchanted creature gains Reach
{u}: Enchanted creature gains Flying
{b}: Enchanted creature gains Trample
You may change effects at any time, by paying
twice the listed cost for an effect.