Nivmagus Elemental [Return to Ravnica] Merfolk Rogue create a token that's a

create a token that's a copy of equipped creature

put a +1/+1 counter on it and tap up to one target creature defending player controls

it gains ATK equal to the combined ATK of all "Dark Magician Girl" currently on the field and in the GYs

Set: Worldwake Type: Creature — Human Druid Ally Rarity: Rare Cost: {1}{G} {T}: Add X mana of any one color

Nivmagus Elemental [Return to Ravnica] Merfolk Rogue create a token that's aSet: Return to Ravnica Type: Creature Elemental Rarity: Rare Cost: {U R} Exile an instant or sorcery spell you control: Put two +1 +1 counters on Nivmagus Elemental. (That spell won't resolve.) When it escaped, the experimenters hesitated. It would cause untold havoc, yet they wished to see it in action.