1 Tuner + 1+ non-Tuner monsters
If this card is Synchro Summoned using a Tuner Synchro Monster: You can target 1 Spell/Trap in your GY; add it to your hand. When your opponent activates a card or effect (Quick Effect): You can send 1 Spell/Trap from your hand or field to the GY; Special Summon 1 Level 7 or lower Tuner Synchro Monster from your Extra Deck, GY, or banishment. You can only use each effect of "Diabell, Queen of the White Forest" once per turn.
1 Tuner + 1+ non-Tuner monsters
If this card is Special Summoned: You can target 2 "White Forest" monsters in your GY; place them face-up in their owners' Spell & Trap Zones as Continuous Spells. During your opponent's Main Phase, you can (Quick Effect): Immediately after this effect resolves, Synchro Summon using this card you control. You can only use each effect of "Poplar of the White Forest" once per turn.
1 Tuner + 1+ non-Tuner monsters
If this card is Special Summoned: You can send 1 Spell/Trap from your hand or field to the GY; add 1 "White Forest" card or 1 LIGHT Spellcaster monster from your Deck to your hand. You can only use this effect of "Rciela, Sinister Soul of the White Forest" once per turn. Illusion and Spellcaster Synchro Monsters you control gain 500 ATK, also they cannot be destroyed by your opponent's card effects.
1 Tuner + 1+ non-Tuner monsters
If this card is Special Summoned: You can change all face-up monsters your opponent controls to face-down Defense Position. Illusion and Spellcaster Synchro Monsters you control gain 500 ATK, also if they attack a Defense Position monster, inflict double piercing battle damage to your opponent.