(Sandstone Woodlot isn't a spell.)

At the beginning of your upkeep, Sandstone Woodlot deals 2 damage to target creature you control.

Sandstone Woodlot is indestructible. (Destroy effects and lethal damage don't destroy it.)

: Add  or to your mana pool.

Sacrifice Sandstone Woodlot: Add  or to your mana pool.