Subterranean Sneakway

Whenever a Viashino enters the battlefield under
your control, place a sand counter on
Subterranean Sneakway.
{t}: Put a creature into play with converted mana
cost equal to the amount of sand counters on Subterranean Sneakway into play. Sacrifice it at
the beginning of the next end step.
{2}, Remove a sand counter from Subterranean Sneakway: Draw a card.