Like most Pokmon cards, the value of Greninja BREAK depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (BREAKpoint)
Additionally, getting your cards professionally graded by a reputable grading service can help establish their authenticity and condition, further influencing their value
The First Official Pokmon Cards: The Base Set The real breakthrough for Pokmon cards, however, came with the Base Set , released in 1999 in the US, and in 1996 in Japan
if that sounds like your kind of game, then this commander is second to none
Viridian Zealot originally had a cube slot and saw play as a cheaper alternative to Nantuko Vigilante however it was all round really awful, you never wanted to lose it in combat as you would then be without your answer, you also often tried to keep up activation mana to sacrifice as a response to things