They are all good in both Bo1 and Bo3, mind you, but how good will vary
Between each players turn, two damage counters (with a single damage counter defined as causing 10 HP of damage to a Pokmon, which of course means 20 HP damage if two damage counters are used) are placed on the Burned Pokmon
Exploration 3 Very powerful but unfortunately not well placed
Its even stronger than Yawgmoths Bargain (which is certainly a consideration as an auto-keep) because it has the built-in ability to give you back all the life youve lost
Usually, playing the best deck with no preparation is not a wise choice, unless the best deck is Nadu or your MTGO name is Thalai
The appropriate player has the option to pay 3 life, but regardless of their choice, the token won't return to the battlefield