Santa, Timely Gift-Giver

(This card's mana cost is {365}{w})
This card cost {1} for each day since last year's
Christmas. If its a leap year, this card also cost
{1} more.
When Santa, Timely Gift-Giver enters the
battlefield, each player creates three Gift tokens.
(They're artifacts with "Sacrifice this artifact: You
gain 1 life.")