Flying Tetravus enters the battlefield with three +1/+1 counters on it. At the beginning of your upkeep, you may remove any number of +1/+1 counters from Tetravus. If you do, create that many 1/1 colorless Tetravite artifact creature tokens. They each have flying and "This creature can't be enchanted." At the beginning of your upkeep, you may exile any number of tokens created with Tetravus. If you do, put that many +1/+1 counters on Tetravus.
Near Mint - $23.70
Lightly Played - $19.00
Moderately Played - $16.60
Heavily Played - $14.20
Damaged - $11.90
Near Mint Spanish - $23.70
Lightly Played Spanish - $19.00
Moderately Played Spanish - $16.60
Heavily Played Spanish - $14.20
Damaged Spanish - $11.90