Ramos Lucky Charms Ramos, Dragon Engine is a Multicolor Matters deck that rewards you for casting multicolored spells by growing into an evasive 1-shotter that also skyrockets your mana, giving you a whopping 10 mana whenever you activate his (very easy) ability
Most Yu-Gi-Oh
You can go reanimator, you can be a combo deck with Opposition Agent (who is a Rogue!) and Maralen hidden in the 99, you can play straight control, or focus on Rogue combat damage with stuff like Conspiracy and Arcane Adaptation
Then you can discard two cards at the beginning of your first main phase to return this to your hand from your graveyard, which is card disadvantage naturally but with madness, lands, discard triggers like Archfiend of Ifnir, and loads more, it's got value
Toys and Supers appear as brand new card supertypes, and they get loads of support in the set
Sure, there are corner cases where this might be useful