Father's Day

Father's Day can't be countered. When you cast
Father's Day, check the date. If it is Father's Day,
Father's Day has no mana cost and you win the
game. Spells and abilities your opponents control
cannot prevent this effect. If it is not Father's
Day, you gain life equal to the combined ages of
your Progeny (children, stepchildren, adopted
children, and their descendants). Your opponents
then exile permanents and cards from their hands
and libraries until they have met the same total.
Do you s