Divine Sun Spear

Miracle passed down to those bound by the Sunlight covenant of Pelor. Hurl lightning spear at your enemies. In days of age lightning was the only way to pierce the hides of ancient dragons, and this miracle changes the tide of the uprising against the ancient dragons. 

You create a spear in your empty hand out of pure light, crackling with divine lightning. You hurl the spear at a target within range. The target must make a Dexterity saving throw, taking 1d6 radiant damage and 1d6 lightning damage on a failed save, or half as much damage on a successful one. At

Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 radiant and 1d6 lightning damage for each slot level above 1st.

If you substitute the holy symbol or talisman with a Sun Disk or Solar Disk (or other sun based artifact) then you can choose to either cast the spell as a bonus action (up to 3rd level) or choose to take ½ damage minimum when rolling dice damage (If you roll a 1 or a 2 ona damage dice it becomes a 3 instead). The solar artifact/disk is consumed in this process (If an artifact roll a d20. On a 1-3- the item is consumed).