Once it's cranked all the way up the Lenz is still a fun weapon.
Mod choice breakdown

• Hunter munitions - this is what makes the bow viable, the slash procs are frequent and large
• Primed Firestorm - radius becomes 12m with this mod, with the damage falloff (30% at the edge) the radius increase is a big uptick in overall damage
• Cautious Shot - With the big booms you're going to need a way to stay standing, either this Primed Surefooted or a warframe that is immune will work
• Vile Acceleration and Critical Delay - Great complimentary pair of mods
• Primed Cryo Rounds - viral won't do much with a low status chance, so elemental mod is for damage only
• Riven - my riven for this isn't the best, but having +damage is more helpful than expected to get the ramping mods started. If you don't have a riven replace with (Amalgam) Serration

Most fun use cases

• Point blank booming - stagger immune frame like Atlas and just unload arrows in mele range which you can't do with other exploders because of arming range
• Bomber Birdy - [Zephyr]'s passive is +150% crit while in the air. Float with the [Lenz] to red crit everything!