Sliver Egg Clutch

{t} add {c} to your mana pool. Put a charge
counter onto Sliver Egg Clutch.
{4}{t}: Sacrifice Sliver Egg Clutch. Search your
library for a Sliver creature, reveal it and put it
into your hand. Shuffle your library.
When Sliver Egg Clutch leaves the battlefield,
create a Colorless 0/1 Sliver creature token called Sliver Egg for each charge counter on Sliver Egg
Clutch.