Each stadium card has its own rules
I dont often think of Red having a lot of cards with high devotion costs, but I think there will still be some out there in Standard that will surprise you
Add Ashnod's Altar and you have a lot of mana
Ive excluded [casthaven]Gemstone Caverns[/casthaven] (which essentially lets you turn being on the draw to being on the play), [casthaven]Urborg, Tomb of Yawgmoth[/casthaven], and [casthaven]Vesuva[/casthaven] since they dont produce multiple mana (but can when combined with lands on this list)
Doctor Doom allows Connive to benefit you no matter the outcome: when you discard a land card, each opponent takes 2 damage, and if it's a nonland card, you still place a +1/+1 counter on the creature that Connived
When we're doing the Secret Lair executions of this, it really does unlock the team to go wherever they want to go with it