If you read it, you will only be able to place 5 damage counters.
http://pokebeach.com/scans/great-encounters/31-weezing.jpg
"At any time between turns, each player puts 1 more damage counter on his or her pokemon"
A pokemon has a poison which deals 4 damage counters, not 4 poisons that deal 10. Also, even if the latter was the case, it would still only add 1.
Not to discourage the use of Crobat, looks like an interesting card, but just so you guys know.
http://pokebeach.com/scans/great-encounters/31-weezing.jpg
"At any time between turns, each player puts 1 more damage counter on his or her pokemon"
A pokemon has a poison which deals 4 damage counters, not 4 poisons that deal 10. Also, even if the latter was the case, it would still only add 1.
Not to discourage the use of Crobat, looks like an interesting card, but just so you guys know.