Good aligned attacks

[Delenot]

Are there any methods for giving your attacks the Good descriptor for overcoming damage resistance?

[Chemlak]

Bless weapon.

[Claxon]

Align Weapon

[Mighty Glacier]

Align weapon (good) also works. It is found on more spell lists than bless weapon, but is a 2nd-level spell.

EDIT: You've been hit by, you've been struck by, a smooth ninja Claxon!

[nicholas storm]

Wrathful weapon can make a weapon holy; holy weapons bypass good DR. +5 weapons bypass all alignment DR

[Fruian Thistlefoot]

Oil of Bless weapon for 50gp is the cheapest source for any class due to oils being easy to apply.

Certain class abilities overcome the DR like a warpriest's Good blessing, Paladin's Smite, and A monk's Unarmed Strikes for example.

There are spells Like Align weapon and bless weapon on Divine caster's spell lists. Or you can UMD a scroll of those spells.

If you have the Cash the Holy weapon property overcomes the DR.

Lastly a +5 weapon Overcomes many forms of DR.

[Delenot]

Nice range of options, thank you!

[Fourshadow]

Holy Weapon Balm is a temporary alchemical way of "aligning" ones weapon at 30 gp.