When this card is activated: You can add 1 "Drytron" Spell/Trap from your Deck to your hand, except "Drytron Fafnir".
The activation and the activated effects of Ritual Spell Cards cannot be negated.
Once per turn, if a monster is Normal or Special Summoned face-up while you control a "Drytron" monster (except during the Damage Step): You can reduce that monster's Level by 1 per 1000 of its current ATK (min.
Level 1) for the rest of this turn.
You can only activate 1 "Drytron Fafnir" per turn.