Santa Claus, Father Christmas

At the beginning of your upkeep, each player
chooses one:
•Naughty That player creates a Coal token.
(It's an artifact with ''{t}, Sacrifice this artifact:
Add one mana of any color.'')
•Nice That player creates a Gift token.
(It's an artifact with ''{2}, Sacrifice this artifact:
Draw a card.'')
Whenever a Coal or Gift is sacrificed, create a
1/1 green Reindeer with flying.