Creatures can't attack you or planeswalkers you control unless their controller pays {X} for each of those creatures, where X is the number of enchantments you control.
Near Mint - $0.25
Lightly Played - $0.24
Moderately Played - $0.19
Heavily Played - $0.15
Damaged - $0.10
Near Mint Non-English - $0.25
Lightly Played Non-English - $0.24
Moderately Played Non-English - $0.19
Heavily Played Non-English - $0.15
Damaged Non-English - $0.10