the Chimera cards encourage mixing Illusion monsters with Beasts and Fiends, retrains (such as "Golgoil the Steel Seismic Smasher") will support both Illusion and their original Type, and various cards (both OCG / TCG -original and from the anime/manga) also support Spellcasters
The best Lorcana starter deck if you've played a TCG before: Sapphire and Steel Control the field as you ramp up your power Sapphire and Steel is Lorcanas best starter deck for players who are already somewhat familiar with trading card games, especially those who like to play Control decks in TCGs like Magic: The Gathering
While some of their cards are restricted in the TCG, they have no such restrictions on Master Duel
Heavy Ball allows the player to search for any Pokmon with a Retreat Cost of 3-of higher, while Level Ball searches out any Pokmon with 90HP or less
Rerolling would actually be easier in Pokmon TCG Pocket with a trading function , so it'll likely be prohibited to prevent players gaining an unfair advantage in the trading market
You could not build the decks in real life, obviously, because you would be overusing some number of cards, but as a deck idea or recipe, it works well