Enchantment
Cumulative upkeep {R} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Blue creatures can't block creatures you control. Nonblue creatures can't block creatures you control unless their controller pays 1 life for each blocking creature they control.
Autentícate usando cualquiera de los siguientes métodos. Si es tu primera vez, te pedirá que te des de alta.
