They have an 8.5% (9.5% with Looting I, 10.5% with Looting II and 11.5% with Looting III) chance of dropping that shovel if they are killed by the player. Zombies and husks have a 0.67% (3.33% in Hard difficulty) chance of spawning with an iron shovel. On ancient_city/city_center/city_center_2, they generate a furnace with a wooden shovel inside of it. A shovel can be repaired in an anvil by adding units of the tiers' repair material, with each repair material restoring 25% the shovel's maximum durability, rounded down.
