In tournament, as long as you have at least one Basic Pokmon card in your deck, you can't be punished for playing an impossible evolution cards (like Riolu+Lucario with M Lucario- EX ), you would just have cards in your deck that you are not able to play under any circumstances (you can't put M Lucario- EX into play without Lucario- EX )
Cards with cycling seem great here, like Lrien Revealed, Treacherous Terrain, Boon of the Wish-Giver, or Decree of Savagery
12472242 Lesser Dragon
It isn't Keiga, and it costs quite a bit of mana, but once online, Triskelavus does a passable job of controlling the board, due to its ability to split off into many skydivers
This is technically illegal in the video game, as these cards are limited to one each per Deck
But some, like Starnheim Unleashed, have even bigger effects when you foretell them