You can also add Goblin Anarchomancer to make your cards cheaper, giving you access to huge spells like Old Gnawbone or Hellkite Tyrant as early as turn three with the right amount of Treasures
OP-16 is themed around the Summit War / Marineford era, including Impel Down, the Navy, Whitebeard Pirates, Blackbeard Pirates, and the major characters tied to that conflict
Shelter It draws you a card, which makes this protection spell playable
Okay, this change is straightforward
And getting to draw cards each turn isnt bad either, it just takes something like Beza, the Bounding Spring or Emeritus of Abundance in play to do it
So rather than try to make Tinker fair, why not try to make the eminently-comparable (in all except maximum power level) Fabricate playable