[u]Precision Frame Exotic Solar Bow[/u]
[b]Exotic Perk[/b]: [i]"Thermite Arrows"[/i] fully drawing this bow fires a thermite arrow that can stick to surfaces and spit out sparks and deadly flames for 3 seconds, setting any nearby enemies on fire.
[b]Bowstring[/b]: High tension string
[b]Arrow[/b]: Helical fletching
[b]Trait[/b]: direct precision hits with arrows deal a slight amount of burn damage to targets, and precision final blows cause enemies to explode.
[b]Catalyst[/b]: Increase burn time of thermite arrows from 3 seconds to 4.
[b]Draw time[/b]: 720
Edit: changed the arrows so that they only spark and shoot flames when sticking to walls. Arrows deal a small burn damage with direct precision hits.
The problem with any solar bow is it can't include a DoT of any kind because Le Monarque exists.
You'd have better luck just creating a kinetic Exotic Bow concept, then arbitrarily adding solar damage to it.