Shaco vs Ekko Jungle Matchup
Shaco Jungle wins 50.2% of 1,768 Low Elo games against Ekko Jungle, +0.6 points vs expected, 2-patch window 26.19-26.20.
Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.
How to play as Shaco
Save Deceive(Q) to leave Ekko's W field before it stuns; if he closes into melee range, time Hallucinate(R)'s untargetable cast to dodge his empowered E attack.
If you expect Ekko to Chronobreak back, place your clone near the path he will return to so he may spend his escape on the clone.
A Shaco player reports that Deceive(Q) can move him out of Ekko's Parallel Convergence(W) area before its stun triggers.
A Shaco player reports that Hallucinate(R)'s clone can bait Ekko's Chronobreak(R) toward the clone's position; when the clone dies, it explodes and releases boxes.
Sources
These notes come from r/shacomains, checked against the champions' abilities.