Aurum Vigilante

Whenever another Snake creature you control dies, put a +1/+1 counter on Aurum Vigilante.
Other Snake creatures you control get +1/+1.
{u}{b}{g}: Put the top three cards of your library into your graveyard, then return up to one target Snake card from your graveyard to your hand. Activate this ability only if you control three or more Snakes.