This created a Sanguine Loop archetype that dominated casual tables all summer
When the game decides to do a random trade, it will randomly select one of the cards the player is able to give away (each with equal probability, ignoring imperfections in the RNG and its utilisation), randomly select one of the cards the opponent is willing to part with, and then offer to trade those two cards
That opens up all sorts of possibilities, although since its a Stage 2 Pokmon, it still takes a bit of work and quite a lot of space in your deck to get it going
This card is immensely powerful, primarily thanks to its first attack, Powerful Rage, which allows Reshiram to deal more damage to the opponent based on how many damage counters are on it
Unsurprisingly, MTG players arent happy about this sudden increase in price
Zenith is the best card if you want to understand how green leverages mana advantages