Exchange of Despair and Hope (MAMA-EN030)

If you control 3 or more EARTH Fairy monsters: Send as many monsters from the field to the GY as possible (min. 1), then each player can Special Summon monsters from their opponent's GY to their own field, up to the number of monsters sent to their opponent's GY by this effect, then, if a monster was Special Summoned by this effect and "Exchange of the Spirit" is in your GY, you can Set 1 Trap directly from your Deck. It can be activated this turn. You can only activate 1 "Exchange of Despair and Hope" per turn.