Activate Anzrag by paying ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) ({G} magic symbol) ({G} magic symbol) , causing opponents to block Anzrag if able this turn.
Declare Anzrag as an attacker, attacking an opponent who controls a creature.
Holding priority, activate Maze of Ith by tapping it, untapping Anzrag and preventing all damage dealt by or to it this turn.
The opponent is forced to block Anzrag, triggering Anzrag, untapping all creatures you control and causing you to get an additional combat phase after this one.
Any combat damage that would be dealt is prevented due to Maze of Ith.
Move to your next combat phase, and declare Anzrag as an attacker, attacking an opponent who controls a creature.