Azorius Tempo plays a lot of small evasive flyers (Momo, Sage of the Skies, Steamcore Scholar) and nonbasic lands (Floodfarm Verge, Gleaming Bastion, Hallowed Fountain), making Sunspine Lynx's damage-per-nonbasic-land trigger a meaningful clock on top of shutting off incidental lifegain from Sage of the Skies. Thought-Stalker Warlock's menace lets it attack through their small blockers while stripping a card from their hand. Stinging Vitriol's 2 damage is too slow to matter against their low-toughness creatures that die to our existing burn, and Valley Flamecaller's bonus damage is less impactful since we aren't relying on direct player damage as much in a creature-combat-heavy game. Be mindful of Get Lost and Erode picking off your key threats.