WHAT IS UHC?. EXPLANATION. Welcome to UHC Season 3 - Where every heart of health counts. You're not allowed to strip mine unless you find a cave, lava, ore, or resource. You must staircase down, you're not allowed to dig straight down. Health only regenerates by using a golden apple or regeneration potion. The last team standing wins. Let's smash 5,000 likes for more Minecraft Survival UHC. Click to never miss an episode.