Expert take
Zilean is an excellent support when you want to win through rhythm reading rather than immediate mechanical domination. He rewards players who can think one action ahead: where the enemy will enter, who will receive the burst, which ally truly deserves the speed, and which target must be brought back into the fight. His ceiling is not only in QWQ, but in how he makes enemy decisions less rewarding. He is not ideal for every draft, especially if your team lacks initiative, but in a composition that can use tempo, he can turn a lost fight into a winning second sequence.