Why not changing some of Lucian's damage to magic to counter his synergy with early-mid game ArPen?

His Q seems the best offender. Change the damage from physical to magic. Change the ratio from 60/75/90/105/120% bonus AD to 100% + (1% per 1% crit chance) bonus AD.

This way:

1. He'd be forced to build ER + Zeal Item + IE and all build diversity will be shut down Kappa
2. The increase in bonus AD ratio on Q early on is countered by the higher value at early levels of MRES on 90% of champs.
3. The mid-late game relevancy of the spell wouldb be granted by the higher ratio (expected 170% bonus AD most games). His waveclear would be straight buffed.