Iron Island

Iron Island is a dungeon in Sinnoh. It initially has 64 tiles arranged in an 8x8 square, including 8 chest tiles, 19 non-boss encounter tiles, and 1 boss encounter tile. Wild Encounters have 983,000 HP. The first time you clear this dungeon you will be awarded with a Fighting egg.

Debuff Drop Table
After Reaching Alola, the drop chance for items in Sinnoh will be debuffed for any loot with a Tier rarer than Rare (ie: Epic, Legendary, Mythic).