The main intent was a generic Level 6 Synchro monster with a Tribute effect. If destruction seems repetitive, I would be fine with changing it to something such as reducing ATK, changing face-down, banishing, ect. The ATK increase is just to get over some bodies, while still remaining vulnerable to Normal Summoned monsters.
1 Tuner + 1 or more non-Tuner monsters
If this card battles a Special Summoned monster: You can increase this card's ATK by 1000 until the end of the Damage Step. You can Tribute this card; destroy 1 card on the field. You can only activate this effect of "Priestess Swordmaster" once per turn.