Darkrai, Shadowcaster

- Whenever Darkrai blocks or is blocked, flip a
coin. If heads, each creature it is fighting falls
asleep (They tap and stay tapped until 3 of their controller's end steps have passed or until an effect
untaps them. While they are tapped this way, they
cannot activate abilities.).
{t}: Put a -1/-1 counter on every target sleeping creature. Darkrai gets a +1/+1 counter.
- Darkrai has power and toughness equal to the
number of swamps you control.