Dimhollow Crypt

This land enters the battlefield tapped.
{t}: add {b}{r}
{2}{b}{r}{t}: create two 2/1 blue and black dog
creature tokens with menace and: "When this
creature deals damage to a creature, tap that
creature. It doesn't untap during your
opponent's next end step."
At the beginning of your end step, if you possess
three or more blood tokens, transform this card.