mc_rebalance_datapack/data/minecraft/loot_tables/blocks/gravel.json

{
	"type": "minecraft:block",
	"pools": [{
		"rolls": 1,
		"entries": [{
			"type": "minecraft:alternatives",
			"children": [
				{
					"type": "minecraft:item",
					"name": "minecraft:gravel",
					"conditions": [{
						"condition": "minecraft:match_tool",
						"predicate": {"enchantments": [{"enchantment": "minecraft:silk_touch", "levels": {"min": 1}}]}
					}]
				},
				{
					"type": "minecraft:item",
					"name": "minecraft:gravel",
					"conditions": [
						{
							"condition": "minecraft:any_of",
							"terms": [
								{"condition": "minecraft:match_tool", "predicate": {"tag": "minecraft:shovels"}},
								{"condition": "minecraft:match_tool", "predicate": {"tag": "forge:tools/paxels"}}
							]
						},
						{"condition": "minecraft:random_chance", "chance": 0.5}
					]
				},
				{"type": "minecraft:item", "name": "minecraft:flint"}
			],
			"conditions": [{"condition": "minecraft:survives_explosion"}]
		}]
	}],
	"random_sequence": "minecraft:blocks/gravel"
}