Nathaniel was now faced with the dilemma even he couldn't solve.  Two methods in which to destroy the arena and an attack.  He needed help.  Using what little strength he wasn't using to uphold the barrier, he called someone to save everyone for him.

Summon: Guardian Angels

Effect: Using their combined strength, an army of angels close the rift.  They now surround the arena

Nathaniel now breathed heavily.  He was using every ounce of his will to hold the barrier as it is.  Anymore and he may fall.  The bomb was nearly ready to explode.  He need just a little more.

"Shoot me if you must.  The angels will only save the arena.  I will die if it means this barrier upholds.  I fear not death, for it means I have completed my task.  So shoot knowing even with the corruption in your heart, you will die as well.  As soon as the bomb explodes, you will be the only thing its blast can touch."

Angels

Defense: Protection

Effect: The angels now are set to protect the arena and its spectators if the barrier is to fall.