At the beginning of your upkeep, Windswept Tar Pit deals 2 damage to target creature you control.
: Add
or
to your mana pool.
Put Windswept Tar Pit on top of your library: Add
to your mana pool.

: Windswept Tar Pit becomes a 0/4 white and black Angel creature with defender until end of turn. It's still a land.