Sylvan Library [Commander's Arsenal] XY55 and cannot be destroyed by

and cannot be destroyed by battle except with another "Number" monster

but was corrupted by the power of darkness

Set: Duelist League Promo Card type: Normal Trap Rarity: Rare When your opponent declares an attack while the only monsters you control are Machine-Type "roid" monster(s): Draw 2 cards

A punch from this creature has earth-shaking results

Sylvan Library [Commander's Arsenal] XY55 and cannot be destroyed bySet: Commander's Arsenal Type: Enchantment Rarity: Rare Cost: {1}{G} At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.