Tsuchigumo, Webweaver

{w}{g}{x}, Tap an untapped Spider you control:
Search your library for an Aura card with
converted mana cost X or less and put it onto the battlefield. Then, shuffle your library.
Whenever an enchanted creature your opponents control dies, create a 0/2 white Egg Sac creature
token with "When this creature dies, create X
1/2 green Spider creature tokens with reach,
where X is the number of creatures in your
graveyard."