Silvera, Wolf Tamer of the White Forest

[ Spellcaster / Synchro / Tuner / Effect ] 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. ATK/ 1900 DEF/ 2400