The Dutch Goat Trading Company does allow for returns on some items
Unless your goal is specifically to get this blue instant in your graveyard to cheat its cost later with something like Mizzix's Mastery, this shouldnt make many decklists
If you need a quick way to gain a ton of hand advantage, warping a Starwinder is far from the worst thing you could do - even if you're missing out on the 7/7 beater it provides when you warp it for a single turn
"Deck Lockdown" and/or "Mistake" plus/minus "Thunder King Rai-Oh" - "Prophecy" Decks often times substantially rely on Toolbox tactics to add "Prophecy" monsters and "Spellbook" Spells from the Deck to the Hand to keep Hand resources and play options motley
Theres also likely to be subthemes of both lifegain and sacrifice, maybe with a small touch of stealing stuff too, as converting things is a big part of being a Vampire
First, sacrifice Eldlich and a held spell/trap to the graveyard (GY) to send an opponents card straight to the GY without triggering the destroyed condition