To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of Emet-Selch of the Third Seat's first ability)
Fund only that amount: Top up to the cap and resist topping up again mid-session
Then for Number C15: Gimmick Puppet Giant Hunter is Xyz Summoned by Rank-Up-Magic Argent Chaos Force, targeting the copy of Gimmick Puppet Fantasix Machinix to Xyz Summon the card
You may cast the copy by paying rather than paying its mana cost." Spirit of the Whalaqee Equip Artifact - Equipment Dancer's Chakrams Job select (When this Equipment enters, create a 1/1 colorless Hero creature token, then attach this to it.) Equipped creature gets +2/+2, has lifelink and "Other commanders you control get +2/+2 and have lifelink," and is a Performer in addition to its other types
Myutant Mutant [1st Edition] BACH-EN019 YuGiOh Battle of Chaos Keep track of your collection value over time
In that case, I'll stick to copying Agent of Treachery and Peregrine Drake triggers