The Worlds Activity Zone currently has demos for the "Pokemon Trading Card Game Classic!" I was able to take photos of the cards and accessories
When a creature cards activated ability tells you to choose a card from an opponents graveyard and put it onto your battlefield, for instance, that action cannot be countered, as the action itself is not a spell in MTG
The ideal reactive board is actually Formula Synchron into a Black Rose Dragon, or Trishula, Dragon of the Ice Barrier to summon it on the opponent's turn
Once in play, this enchantment causes every merfolk its controller would cast to provide twice as much value as it would normally, allowing for overwhelming board states to be amassed if one's opponents can't remove Reflections of Littjara
Dimension Distortion
Going off power rather than CMC makes Mentor of the Meek far easier to activate, despite being stricter