The Urborg Acid-Mire

When The Urborg Acid-Mire enters the battlefield, sacrifice it unless you pay {b}{b}
Defender, first strike
All combat damage that would be dealt to The
Urborg Acid-Mire by creatures blocked by it is
dealt to you instead.
{t}: Add {b}. The Urborg Acid-Mire deals 1
damage to you.