Santa's Sack

If you have 'The Sleigh' and have activated both
of its abilities, you may sacrifice Santa's sack
and create a +1/0 counter.
At the beginning of your upkeep, you may reveal
the top card of your library. If it's a land card, you
may put it into your hand. Otherwise, place it at
the bottom of your library.
If this artifact is in the field when you cast 'Siege
of The Nutcrackers' then exile this artifact.