God of Night

You may have Night creatures you control not
leave the field from their effects.
Night creatures you control gain +0/+2
Light creatures you control have, '{t}: Deal 2
damage to target creature.'
"I dance with the light, but the best moments happen
during the night. The sun may shine bright, but the
stars are numerous. I don't dislike the light, but people
are so much closer when I rule."—The God of Night