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 - $52.600
Lightly Played - $42.100
Moderately Played - $36.800
Heavily Played - $31.600
Damaged - $26.300
Near Mint Spanish - $52.600
Lightly Played Spanish - $42.100
Moderately Played Spanish - $36.800
Heavily Played Spanish - $31.600
Damaged Spanish - $26.300