Blight Mamba knuckles

Infect
Blight Mamba knuckles enters battlefield you explore(reveal the top card of your library If the revealed card is a land put that card into your hand If it's not a land card you put a +1/+1 counter on Blight Mamba knuckle then put it back on top of your library or into your graveyard you)
{1}{r}:Regenerate Blight Mamba knuckles.