mtg all cards with storm Legal in Modern, Rules Text: Storm, 53 (When you cast it Seize the Storm - Innistrad:

We expect this card to become an immediate multi-format staple, and thus it earns the top spot in our rankings

Pestilent Spirit Pestilent Spirit is an interesting card for these rankings because it grants deathtouch to your instant and sorcery spells

The serialized cards overrule whatever else you were going to open in that slot

I mentioned Darien, King of Kjeldor earlier, but Kemba, Kha Regent is great for making 2/2 White Cat creature tokens which happens for each equipment attached to Kemba, Kha Regent

Force of Negation [Borderless] #13 (Magic Avatar: The Last Airbender Eternal | Magic Cards) prices are based on the historic sales

Six mana can be a lot, but red has no shortage of rituals or Treasure tokens to get this out early, and while you cant cascade from copies of spells, you can discover if you cast cards like Trumpeting Carnosaur or Hit the Mother Lode, which then gives you more copies