If something is also wildly powerful in the 99, or simply unfun all around, we're fine leaving it on the list, but power alone isn't a reason to list it as a Game Changer
Alena, Kessig Trapper The first knock on Alena, Kessig Trapper is a high cost, especially with a primary ability that ramps you
March of Reckless Joy will let you exile x cards and then play up to 2 of them
Some spells and abilities can deal damage to a battle, and spells and abilities that deal damage to any target can target/damage a battle
He will appear in the upcoming set as a blue and white Mana Planeswalker that can also serve as your commander
However, if you really want to play with Star Wars Magic cards, there is already a pretty good solution