Amass Oozes X, where X is number of creature types among creatures on the battlefield. Don't count changelings. That would be ridiculous. (To amass Oozes X, put X + 1/+ 1 counters on an Army you control. It's also an Ooze. If you don't control an Army, create a 0/0 black Ooze Army creature token first.)
Near Mint - $23.50
Lightly Played - $18.80
Moderately Played - $16.40
Heavily Played - $14.10
Damaged - $11.80
Near Mint Spanish - $23.50
Lightly Played Spanish - $18.80
Moderately Played Spanish - $16.40
Heavily Played Spanish - $14.10
Damaged Spanish - $11.80