(An ongoing scheme remains face up until it's abandoned.) Whenever a creature attacks and isn't blocked, if you're the defending player, create a 0/1 green Plant creature token that's blocking that creature. When four or more creatures attack you, abandon this scheme at end of combat.
Near Mint - $2.00
Lightly Played - $1.60
Moderately Played - $1.40
Heavily Played - $1.20
Damaged - $1.00
Near Mint Spanish - $2.00
Lightly Played Spanish - $1.60
Moderately Played Spanish - $1.40
Heavily Played Spanish - $1.20
Damaged Spanish - $1.00