I am personally stoked to see how Regigigas can power up any of the Regi Pokemon in play, drop-down Thorton, attach either a Twin Energy [Rebel Clash] or Aurora Energy [Sword and Shield], and have a fully powered Amazing Rare Reshiram [Shining Fates] that can OHKO a Flying Pikachu VMAX [Celebrations]
One of the biggest wins is that we now have canon name for Hell/The Abyss/The Pit AND The Plane of Mountains and Seas
Think Ruin Crab or Altar of the Brood: Theyre powerful, but require the mill player to put some work in to make it happen
Considering ReshiZard has a whopping 270 HP (which is high even for Tag Teams), it has a lot of room to pile up damage counters and turn that into a devastating attack
On turn two, you can search your opponent's hand, graveyard, and library for a card to exile, taking all copies of it away