Santa Claus, Christmas Saint

At the beginning of each player's upkeep, they
create your choice of a Gift token or a Coal token.
For the following abilities, X is equal to the
number of Gifts on the battlefield.
{s}{r}: Santa Claus deals X damage to any target.
{s}{g}: Santa Claus gets +X/+X until end of turn.
{s}{w}: You gain X life.
"Merry Christmas to all, and to all a good
night!"