(Brush-Burrows isn't a spell.)
At the beginning of your end step, if you didn't cast any spells this turn, Brush-Burrows deals 1 damage to you.
Sacrifice a land: You gain 1 life.
: Add to your mana pool. Return Brush-Burrows to its owner's hand.
: Add 
to your mana pool. Return Brush-Burrows to its owner's hand.
