Combos with Magus of the Moat

1. All creatures your opponent control lose flying.
2. Magus of the Moat prevents things without flying from attacking.
3. Creatures your opponent can not fulfill the conditions necessary to attack.

Because Sandwurm Convergence prevents creatures with flying from attacking you, and Magus of the Moat prevents creatures without flying from attacking you, no creatures can attack you.

1. All creatures lose flying and Islandwalk.
2. Magus of the Moat prevents things without flying from attacking.
3. Creatures can not fulfill the conditions nessasary to attack.

1. Gravity Sphere causes all creatures to lose flying.
2. Magus of the Moat prevents non-flying creatures from attacking, and since no creatures can have flying, no creatures can attack.