Creature â Slug Horror
Menace (This creature can't be blocked except by two or more creatures.)
Whenever Morkrut Necropod attacks or blocks, sacrifice another creature or land.
When Morkrut Necropod attacks, its trigger doesnâ€™t resolve until after all attackers have been chosen. The same is true for when it blocks. This means that another creature, such as one enchanted with Invocation of Saint Traft, can also attack or block and then be sacrificed. Sacrificing a blocking creature this way doesnâ€™t cause the creature it blocked to become unblocked.
In the unusual situation that you control no other creatures or lands, the last ability wonâ€™t do anything. Morkrut Necropod can attack or block with no penalty.