Number 3: Numeron Gate Trini – (Maximum Gold El Dorado) – (MGED-EN085) – (Rare)

3 Level 1 monsters
Cannot be destroyed by battle. At the end of the Damage Step, if this card battled an opponent’s monster: You can detach 1 material from this card; double the ATK of all “Numeron” monsters you currently control, until the end of this turn.