japanese gengar pokemon card 【Pokemon Card】MEGA EX【MA】(230/193) (M2a) Single [P] Pain Amplifier Gengar-Holo (048) 2022 Pokemon Japanese

Quantity is not a problem at all, but above all else, a black spell looks great in the Double Feature foiling

Field of the Dead then produces an army of 2/2s with every subsequent land drop once you hit the threshold, which is very hard to interact with and beat

The pirate deck may finally become a thing

While that's not the most terrible idea, the likelihood in a Niv-Mizzet deck is that the other spell you're casting is a burn spell that could do the same, and I have to feel that you're going to be better off casting it by itself, rather than putting all your eggs in one basket

Exile that card, then that player shuffles

These are chase items found in premium Collector Boosters