The Leucistic King Cobra

Deathtouch, Haste, Slither, Vigilance, First strike
{1}Slither: If The Leucistic King Cobra is going to take damage, you can return The Leucistic King Cobra back to your hand, and when you put The Leucistic King Cobra back on the battlefield, she
gets a +10/+10 counter.
When The Leucistic King Cobra enters the battlefield, if it is not your turn The Leucistic King Cobra gets to deal 19 damage to every creature on the battlefield.