Firemind's Foresight is a tutor on steroids, and Etherium-Horn Sorcerer might not look like a grand experiment, but it's actually designed to throw out more and more spells so long as you have a ton of mana
If a "Madolche" card(s) is shuffled from your GY into the Deck/Extra Deck, while this card is in your GY (except during the Damage Step): You can attach this card to an Xyz Monster you control
Also note that it triggers on attack (you don't need to connect for a successful hit), letting you get value immediately after equipping
Let your play style dictate your choices, too
Fast Set Consistency Build a cohesive mini set by reusing one base prompt and swapping only creature type, colors, and attacks
It's also the most loosely constructed in terms of overall synergy, which might put some players off, though Y'shtola itself is likely the best face commander of the four