Sacred Blade v2

infuse your weapon with holy light and then slash your blade or shoot your bow to unleash a blade of sacred light that cascades forward, dealing 1d4 damage up to 100 feet away (if you are within melee range of a target and launch this at them, it will also do your weapon damage against them as part of the same action). Additionally, your weapon is infused for 3 turns with an additional +1d4 radiant damage to every attack.

all radiant damage is doubled against undead or fiends. (roll the radiant dice twice for them)

at higher levels:

at level 5, 11, and 17 the ranged projectile damage and the infusion damage of this is increased by 1d4. to 2d4-3d4-4d4.

additionally the infusion lasts for an additonal turn (4 turns instead of 3) when you reach level 11.