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This was also used to abbreviate Pocket Monsters to Pokemon, so although never used, Poki Draco could be considered a shortened version of Pocket Dragon

The effect of 1 is to wipe out the opponent's field and romance, but the material specification is strict, and you can clear it relatively easily with a deck that can be cleared, but such a deck will be quite limited

Goldeen is a water-type Pokmon and its sole, terrible attack, requires a single water energy card

It helps fix the discrepancy between tokens and +1/+1 counters by only making a single token, although that token is usually bigger (you get N +1/+1 counters or an N/N white Spirit creature token)