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 - $32.100
Lightly Played - $25.700
Moderately Played - $22.500
Heavily Played - $19.300
Damaged - $16.100
Near Mint Spanish - $32.100
Lightly Played Spanish - $25.700
Moderately Played Spanish - $22.500
Heavily Played Spanish - $19.300
Damaged Spanish - $16.100