Its always 100 ATK/DEF Point stronger than the strongest monster on the field (except for itself, obviously), and it disables your opponents ability to active Spell and Trap cards for two turns after its played
The banishment is temporary, but the method is unusual
Whichever two of the three that you tribute it causes Master Peace The True Dracoslaying King to be unaffected by that type of card, leading to situations where you simply cant get rid of the card
But like most Noble Arms equip spells, this card also allows you to re-equip it to another monster every time its sent to the graveyard, as long as you control a Nobel Arms monster
You did well in making her Spellcaster, though
Granted, it doesnt have to be the same Exodius, but this still feels impractical