(1) Target 1 monster in your opponent’s GY; Special Summon it to their field, then you can banish 1 monster they control, then return 1 of your opponent’s banished monsters to the GY.
(2) If this card is in your GY, except the turn it was sent there: You can banish it, then target 1 Level 1 monster in your GY; shuffle it into the Deck, then you can Set 1 “Terrors of the Underroot”, “Terrors of the Overroot”, or “Terrors of the Afterroot” directly from your Deck.