Creeping Crawlers

At the Beginning of your upkeep, if you control
one spider creature, put one 1/2 green spider
token with reach onto the battlefield.
If you control five spider creatures or more, put
two 1/2 green spider tokens with reach onto
the battlefield.
{b}{2},{t}: Sacrifice Creeping Crawlers. Search your library for a spider creature card. Reveal it and
put it into your hand.