A redditor recently sent me a lot of League of Legends data he scraped in the summer. More than 70,000 matches more than 700,000 participations (a single player playing a game, leaving a data point with his weapons, summoner spells, if he won the game and the champion picks of him and his teammates).
Now it is easy to rank the summoner spells on their effectiveness, from most to least effective:
| 1 | Clairvoyance | +2.56% |
| 2 | Smite | +2.30% |
| 3 | Flash | +1.31% |
| 4 | Ignite | +0.29% |
| 5 | Cleanse | -0.14% |
| 6 | Teleport | -0.64% |
| 7 | Ghost | -0.81% |
| 8 | Exhaust | -1.14% |
| 9 | Clarity | -1.40% |
| 10 | Fortify | -1.86% |
| 11 | Heal | -2.27% |
| 12 | Revive | -5.66% |
| 13 | Rally | -14.43% |
Having Smite will ‘improve your chance of winning’ all other things (skill, champion, ..) being equal by 2.3%.
Which were the most popular summoner spells? Let’s have a look:
| 1 | Flash | 69.66% |
| 2 | Ignite | 34.56% |
| 3 | Ghost | 27.31% |
| 4 | Exhaust | 25.51% |
| 5 | Teleport | 12.88% |
| 6 | Smite | 10.42% |
| 7 | Clarity | 6.04% |
| 8 | Clairvoyance | 5.77% |
| 9 | Heal | 5.40% |
| 10 | Cleanse | 1.01% |
| 11 | Fortify | 1.01% |
| 12 | Revive | 0.36% |
| 13 | Rally | 0.08% |
Clairvoyance and Smite are not very popular despite their effectiveness. Rally is deservedly last in popularity contest.
Next time we look at something far more interesting: Effectiveness of Champion/summoner spell combos.