I killed the gith last night and felt it completely sucked the 2handed wep had stupid trigger stuff instead of just being a cool weapon, so i oathbroke n killed the oath breaker paladin who turns up, he apparently had no equipment wich felt ..... very emersive.
I suggest you try this build I am using now if you want to make use of this sword:
1. Paladin with Great Weapon Fighting Style passive.
2. Use Githyanki Greatsword + Helmet of Grit + Holy Rebuke + Poison Coating when falling under 50% hp.
3. This equals 2d6+modifier+1d4+1d4+1d4+2d8(smite) on hit, while every 1 or 2 damage roll is rerolled because of the GWFS, resulting in enourmous damage numbers and truly unlocking the power of this sword. My minimal damage on hit with this setup was 16
