Use Flamespitter to zone out your enemies in lane with AOE magic damage.
Scrap Shield is good to activate before you initiate on an enemy.
Spamming Flamespitter and Electro Harpoon is a good harassment strategy, but be careful not to overheat or you'll get silenced.
League of Legends Rumble players could find him to be a difficult character to build out properly. You'll see that his build is modified when he is playing against either diversified or highly focused team compositions, meaning you should not choose the same Rumble build every single game of League of Legends
The most essential items to include in your champion's build are: Night Harvester, Rabadon's Deathcap, and Demonic Embrace. Players who included these pieces in their setups had a better win rate than players who tried for other item builds for Rumble. Moreover, if you are playing a well-mixed enemy team comp, you should strongly consider getting Rumble the Sorcery, and Resolve runes. In recent games, he won the largest fraction of his rounds when equipped with these runes.
We came up with our Rumble build recommendations by examining 21,306 recently ranked League of Legends games with him in them. We only recommend the best winrate Rumble builds that have been used by ranked gamers enough times for us to reccomend them. With so many games in our dataset, we are confident in our recommended builds.