Naturally, any deck specializing in one or more of the creature types listed here should run the card
The minimum recommended to keep the cards in great condition is to sleeve them (perhaps even double sleeve the holo cards) and keep them in a good binder
Different card names isn't a limitation in EDH at all, and this demon berserker tends to work best in a reanimator deck, alongside Unburial Rites or Rite of the Moth
While fully evolved Pokemon are typically stronger, strength isn't the determining factor for prices in the Pokemon TCG, as more often than not, popularity and visual appeal win out over other factors when determining a card's price
Psyduck has one battle flair
Flash Whenever a creature you control deals combat damage to a player, draw a card