Mono-Red Prowess doesn't care about nonbasic land destruction with only a handful of nonbasics, so Field of Ruin and a Demolition Field come out. Beza, the Bounding Spring is a sturdy 4/5 blocker against Monastery Swiftspear, Soul-Scar Mage, Emberheart Challenger and Screaming Nemesis, and her enters trigger can swing life, cards and board when they're ahead, though Sunspine Lynx stops the life gain and its 5 power can kill her in combat. Chandra, Awakened Inferno's -3 deals 3 damage to each non-Elemental creature, which wipes Monastery Swiftspear, Soul-Scar Mage, Emberheart Challenger and Screaming Nemesis. Sunspine Lynx is an Elemental, so the -3 doesn't touch it, and her -X or your spot removal has to handle it instead. Chandra can't be countered, but their burn and haste creatures can pressure her. Be careful triggering Screaming Nemesis's damage-reflection with pinpoint removal or with Chandra's -3, since the reflected damage can hit Chandra or you.