Nahum, Benevolent Shepherd

When Nahum, Benevolent Shepherd enters the
battlefield create three 0/1 white Goat creature
tokens.
At the beginning of each upkeep create a 0/1
white Goat creature token.
Whenever you sacrifice a creature, you may pay
{1}{w/b}{b}. If you do, transform Nahum, Benevolent
Shepherd.