Etherial Leech-Beast

When Etherial Leech-Beast enters the battlefield,
if you have life 5 or less put a haste counter on
Etherial Leech-Beast.
{t}: Tap target creature. That creature doesn't
untap during it's controller's next untap step.
Sacrifice Etherial Leech-Beast at the next end
step.
"You never see him until he's chewing on
your arm." - Prof. Meuki (Being Eaten.)