At the time, the expansion that this card is from, Steam Siege, was widely hated as one of the worst of the era for countless reasons, despite having some quality cards
To proliferate means to choose any number of permanents and/or players that have a counter, then give each one additional counter of each kind that permanent or player already has
Base Set runs #1 to #69 for Pokmon, #70 to #95 for Trainers, and #96 to #102 for Energy (PSA Set Registry), so a listing described only as 72/102 is a Trainer and cant be settled on its shadow
WIND: You must pay 500 Life Points to activate a Spell Card
Odion's skill likely won't win too many duels for you, but in case a duel goes south to the point that I need all my traps, that's 1000 points of free damage