Spore, Scourge of the Sewer

{b}{g}Exile a crearture from your graveyard:
Regenerate Spore, Scourge of the Sewer.
{x}{x}{t}: Target player mills {x} cards. Create the following tokens based on each of the cards milled this way:
• Instants or Sorceries = a 1/1 ooze.
• Creatures and Planeswalkers= a 1/1 rat.
• Artifacts and Enchantments= a 1/1 insect.
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