At the beginning of your upkeep, sacrifice this enchantment unless you pay {B}{B}.
At the beginning of your end step, create a 0/1 black Thrull creature token.
Mana cost
3
B
Mana value
4
Printings
From
$0.23
EDHREC rank
#22241
Buy
Formats
Legacy
Legal
Vintage
Legal
Commander
Legal
Rulings
4 Oct 2004
Breeding Pit must actually be on the battlefield at the beginning of the endstep in order for you to get a Thrull. The getting of the Thrull is not part of paying the upkeep, it is part of having the card on the battlefield.