CardName: Birthing Pool
Cost:
Type: Land
Pow/Tgh: /
Rules Text: {t}: Add {1} to your mana pool. If this mana is spent on a
creature spell, put a charge counter on Birthing Pool.
At the beginning of your end step, you may sacrifice
Birthing Pool. If you do, search your library for a creature
with converted mana cost equal to the number of charge
counters on Birthing Pool and put it onto the battlefield,
then shuffle your library.
Flavour Text:
Set/Rarity: Link's Unplaced Cards Rare
Birthing Pool
R
Land
: Add to your mana pool. If this mana is spent on a creature spell, put a charge counter on Birthing Pool.
At the beginning of your end step, you may sacrifice Birthing Pool. If you do, search your library for a creature with converted mana cost equal to the number of charge counters on Birthing Pool and put it onto the battlefield, then shuffle your library.
: Add 
to your mana pool. If this mana is spent on a creature spell, put a charge counter on Birthing Pool.
Was missing shuffle. (I wish that was just an inherent part of "Search.")