Rammus Jungle

Your first clear is patient. Keep Defensive Ball Curl (2nd) active while camps are hitting you and weave attacks throughout it, since the reflected damage is what keeps the clear moving. Once Soaring Slam (Ult) is learned, cast it during Powerball (1st) when the center knockup is needed, or preserve it as a crowd-control-immune follow-up after the roll is interrupted. Gank while the camps respawn. Scuttle fights tilt your way once the ball is up, since it catches whoever contests and the taunt pins them while your laner collapses. You are not an early invader, so avoid duels with junglers who out-damage your raw clear.

The first objective fights give Rammus multiple walls, corridors, and attack-based targets to punish. Powerball's (1st) collision knocks back, stuns, and slows nearby enemies; it does not knock them up. Cast Soaring Slam (Ult) during Powerball (1st) and land its center on the group when you need the one-second area knock-up, then taunt the priority attacker. Between objectives, play for tempo: clear a camp, Powerball (1st) into a side lane, taunt the carry, and leave with a kill or a Flash burned. Counter-gank with your speed, because arriving second to a skirmish on Rammus usually flips it, and keep stacking armor so every brawl tilts further your way. Late game you are pure engage and lockdown: start fights on your terms and pull one carry out of every single one. Powerball's (1st) range and speed let you decide when a teamfight happens, so hunt picks on a backliner walking through river without vision and taunt them into your team. Baron and dragon setups suit you, since you can engage from an unwarded flank and the ball scatters a stacked enemy team off the pit. Be honest about who you dive: against armor-stacking auto-attack teams you are nearly invincible, but against burst mages and percent-health damage you pick your windows instead of tanking everything. Stay armored, stay alive, and treat every fight as one chance to remove the enemy's scariest attacker.

Your teamfight is one decision made well: which enemy do you take out of the game. Powerball (1st) in from an angle their carry did not expect, use the impact to break their formation, and taunt their highest-value attacker so they spend the fight hitting into your armor and feeding your spikes. Curl up the instant the burst comes, and let your team kill the target you isolated. If their carry has an escape, hold your slow to keep them stuck, and remember that peeling a diver off your own carry is worth as much as diving theirs. The fight you want is a brawl where the enemy keeps hitting you; the fight to avoid is one where they ignore you and kite the ball in circles.