Izzet Spellstorm with Stormwing Entity for Standard

Delver of Secrets can transform into a powerful creature when you reveal an Instant or Sorcery card on top of your library. Opt allows you to scry, helping you filter your draws to ensure that you reveal a spell to transform Delver sooner.

Thrill of Possibility allows you to discard a card to draw two cards, which can help you set up Calamity's effect. If you discard an Instant or Sorcery, you can potentially deal even more damage or gain additional advantage from the spells in your graveyard.

Both Lightning Strike and Dragonclaw Strike serve as direct damage spells that can remove opposing creatures or deal damage to the opponent. They can work together to clear the board or finish off an opponent, especially when combined with card draw to ensure you have spells in hand.

Riverglide Pathway is a dual land that can provide either blue or red mana. This synergy allows you to cast spells of both colors efficiently, enabling a flexible mana base that supports both your blue and red spells in a spell-heavy deck.

Coveted Falcon is a flying creature that can benefit from the ability to gain extra power from the Frontier Mentor when you cast spells. This synergy can create a flying threat that grows larger as you play more spells, making it difficult for opponents to deal with.