Rammus should leverage his high gank threat and taunt engage to punish Shaco's early deceptive paths and trap setups.
Avoid extended farm trades with Shaco early; focus on three or four-camp clears toward overextended lanes to maximize early impact and deny Shaco free farm.
Jungle Plan
Prioritize cross-map ganks on pushed or immobile lanes using (Q) speed and (E) taunt to capitalize on Shaco's predictable early routes.
Avoid direct early fights in river without lane priority; instead, track Shaco's pathing to counter-gank and punish his trap placements.
Focus on securing early dragon and Rift Herald control by denying Shaco vision and box setups around objective entrances.
Danger windows
Be cautious around level 2-3 when Shaco can invade or gank with invisibility (Q) and fear (W), especially if lanes lack priority.
Avoid isolated river fights where Shaco's boxes and clone can create dangerous ambushes.
Do not contest objectives without vision control of Shaco's trap placements to prevent forced smite fights or ambushes.
Early game
Start with a three or four-camp clear aimed at lanes showing overextension to enable early ganks with (Q) and (E).
Contest first Scuttle only if nearby lanes have priority and can assist to counter Shaco's high early pressure and invisibility.
Ward defensively against Shaco's early invade paths, especially near river entrances where he sets traps.
Power spikes
Rammus spikes at early ganks with (Q) and (E), so look to punish Shaco before he builds defensive items.
Respect Shaco's level 2-3 power spike when his invisibility (Q) and fear (W) enable surprise ganks or invades.
Rammus's scaling into late game armor and taunt value outclasses Shaco's medium scaling, so prioritize surviving early to reach this window.
Win conditions
Use Rammus's fast gank angles and taunt lockdown to snowball lanes before Shaco can establish trap control.
Deny Shaco free farm by invading camps when lanes have priority and counter-gank his early pressure to maintain tempo.
Translate early gank success into objective control by clearing vision and forcing Shaco into unfavorable teamfights where Rammus's scaling excels.
Tip: For Rammus vs Shaco, read overview, trading pattern, and danger windows first for a fast Jungle lane check.