One way you can do this is by using them as tuners for a synchro summon next turn, allowing you to bring out some seriously powerful monsters to beat your opponent with
Mime slows your opponent by requiring at least two turns to be Knocked Out, normally much longer due to Potion and various other stall tactics
All of those previous Modern reprints in summer core sets began to rebound after about a year, and Leyline of the Void should do the same
Etherium Sculptor is an Artifact Creature Vedalken Artificier for one generic and one blue mana with one power and two toughness
So, if you pay 8 mana for this, you will need a total of 18 mana (2 for the initial cost, then the other 8 mana twice)
Getting into the party spirit, youll often see Pokmon like Pikachu decked out in DJ gear