Tauros (62/130) [Base Set 2] Thunder/Effect Once per turn: You can

Once per turn: You can Special Summon 1 Level 4 or lower Normal Monster from your hand to your zone this card points to

This card cannot be Special Summoned except by the effect of Assault Mode Activate

Increase the ATK of this Special Summoned Fusion Monster by an amount equal to its original ATK

if a monster you control whose original Attribute and Type are DARK and Machine destroys a card(s) on the field by battle or by its own effect: You can Special Summon 1 DARK Machine monster from your hand

You can only activate 1 "Spellbook of the Master" per turn

Tauros (62/130) [Base Set 2] Thunder/Effect Once per turn: You canSet: Base Set 2 Type: Colorless Rarity: Uncommon Retreat cost: Colorless,Colorless