Senna scales incredibly well into late game with extended range and damage, though weak early; utilize Q for sustain.
Runes: Press the Attack (PTA) with Manaflow/Gathering Storm secondary. Core build: Kraken, Runaan's Hurricane, Infinity Edge, and defensive items.
Play as a long-range ADC, effectively using Q for both damage and team healing; Senna support is generally not recommended.
Stats
Q
W
E
R