Two copies of Dragon Fire from a dwindling Set 1 are a bonus and Mauis Fish Hook is seeing inclusion in early drafts for Set 4 Ruby/Amethyst decks
The new Queen, Mirror Seeker can also work as a good alternative to the Gyrosensor while also being quite difficult to remove with her Willpower of 5
Why do you want to do this
Not only does it add a +1/+1 counter to your creatures that deal combat damage to a player, synergizing nicely with Tidus, but it also gives all creatures you control with counters trample and reach, which are powerful abilities
Promo cards follow their own sequence, typically starting with P (e.g., P1, P2) or a code related to a specific event
Use vanilla cards like Olaf, On Human Legs, and The Wardrobe as early-game Ink cards