Im not gonna say casting multicolored spells is niche or hyper-specific, but giving Lilah, Undefeated Slickshot a specific condition like that is definitely a good slow-down on power creep, especially in an archetype like spellslinger, which uses tons of monocolored spells
This Yellow/Black Leader wants to collect its puzzle pieces like staple five-cost blocker Sabo and the kid versions of the Three BrothersLuffy, Ace, and Saboto repeatedly bounce them to play
Now we have three Assemblers in Standard
Add the Fallout Commander Deck: Science
Pumping more mana into flickering or cloning Agent of Treachery is a win condition in many decks
Selvala's Stampede basically tells players to choose whether you get random creatures from the top of your library or permanents from your hand, and theyre also in charge of deciding how many of each you get