Mastodon 
Update 1.21.5 pre-release 5 — Added pale wood, new grass variants and more!
- 7 new grass block variants (flower 1 & 2, clovers 1 & 2, rock 1, 2, 3)
- 2 new gravel variants
- Trial Spawners (active / active ominous / inactive / inactive ominous - top, top ejecting reward, sides, bottom)
- Wildflowers
- Pale Oak Logs (top, sides)
- Stripped Pale Oak Logs (top, sides)
- Pale Oak Leaves
- Pale Oak Planks
- Pale Oak Door
- Pale Oak Trapdoor
- Pale Moss Blocks
- Pale Oak Sapling
- Tall Dry Grass
- Short Dry Grass
- Fletching Table (top, front, side)
- Gravel
- Spawner
- Dirt Path (top, side)
- Enchantment Glint (items + entities)
- Nether Portal
- Dead Bush
- Made Sniffer Egg item bigger
- Dirt path rotation
- Gravel rotation
- Inventory slot icons not showing
- Armor not showing
- Grass decals z-fighting with leaf litter
- Compressed block textures (512x: 106MB -> 89MB)