Lucario-GX, Greninja-GX, Zygarde-GX, Yveltal-GX, Naganadel-GX, even Volcanion and the majestic Arceus must choose a side
Thoughtcast helps us get going when we open a slower opener, and keeps the gas coming once we set up
Depending on the Trickstars you have out, you can deal burn damage when your opponent tries to add cards to their hand, when something goes to the graveyard, or even when you have multiple Trickstars lined up in the graveyard
Finally, every reprint in each deck has new art in line with the Doctor Who universe
Far / Away Far / Away is a good removal spell in multiplayer Magic that can hit two different players with different effects (or hit a certain player twice)
Flash is smart design at work, allowing you to trade against aggro or force them to sit back in fear