A diverse set of Pokmon types requires a substantial number of energy cards for each type, significantly reducing space for essential Trainer cards and making your deck inconsistent
Can only be Special Summoned from your Graveyard
He'd ETB because of Goryo, then be sac'd at EOT, then undying would cause him to ETB again, and the persist counter and undying counter would cancel, so you'd be free to kill woodfall again for his trigger indefinitely
On top of that, the set is filled with familiar faces for those whove been playing a long time, and you end up with some great archetypes to play around with
Though, it is difficult to make the most of them without a higher number of flip monsters and token spawners respectively
Occasionally, a player will want to keep their hand, so theyll choose 0 as their number