Best Great Runes to Pair with Freyja's Greatsword Build
1. Radahn's Great Rune:
Grants significant boosts to HP, FP, and stamina, all of Elden Ring Items which are critical for sustaining prolonged fights with a heavy weapon build.

2. Morgott's Great Rune:
This provides a massive 25% increase to maximum HP, ensuring you can take more hits, especially when running the Rakshasa Set, which increases the damage you take.

Freyja's Greatsword Build Buffing Routine & Attack Strategy
Buffing Routine:
Consume your Wondrous Flask of Physick to gain increased stamina recovery and damage negation.
Cast Golden Vow to enhance both your attack power and defense.
Cast Flame, Grant Me Strength to cheap Elden Ring Items further boost your damage output.