Canon Foreigner: Number XX: Utopic Dark Infinity is this with it being a Utopia monster not used by Yuma and debuting in the ARC-V manga, not connected to the main Number series, and exclusive to the manga has its rank moved to the right side instead of the usual left
Its effect is to choose two of your "Fusion Strike"-type Pokmon, search your deck for a "Fusion Strike" type energy and connect them to these
It should also be noted that EX cards are older, and transitioning out of the Pokmon Trading Card Game, meaning building around them is getting harder as they become more and more outclassed
Emerald Dragon is a great example of how to give card advantage without drawing cards, though Id argue that white deserves it more and has the more playable version in Crystal Dragon
expect tons of Boa designs
Traditionally with recursion, we're trying to put creatures back to the battlefield or back to hand