American

[Hj.elkins]

Having a hard time deciding what to sideboard and mainboard.

Lands:
4x Sulfur Falls
4x Steam Vents
4x Sacred Foundry
4x Clifftop Retreat
4x Hallowed Fountain
4x Glacial Fortress

Sorcery
4x Sphinx's Revelation
4x Supreme Verdict
4x Think Twice
4x Pillar of Flame
4x Bonfire of the Damned
4x Searing Spear
4x Chromatic Rescue (white blue return creature to owner's hand. Gain two life. I think that's what it's called)
4x Azorius Charm
4x Boros Charm
4x Izzet Charm

Creature:
4x Snapcaster Mage
4x Boros Reckoner
1x Niv-Mizzet
4x Kraken Hatchling (call me crazy but for a one drop that beats reckoner every time how can I say no?)
4x Augur of Bolas

Planeswalker:
4x Jace, Memory Adept
4x Tamiyo (probably only run 1-2 of each but idk)

I have all these cards avail to me. If you can think of anything else to help, or what to take off/keep please leave a description of why you chose that so I can see your logic and thinking behind it. Thanks so much!

[Hj.elkins]

I also have 4x Detention Sphere and 4x O-ring I forgot about.

[Hj.elkins]

And maybe 4x Geist?

[Joshnoodles]

I love seeing someone playing  {Niv-Mizzet, Dracogenius}; it's such an underrated card in my opinion.

[MtgRebel]

{Dramatic Rescue} 😬