# Warmaster or Giant Slayer

Since the patch 1.7 and the changes made on Warmaster, there’s one recurring question asked by most players: should you use Warmaster or Giant Slayer?

## Warmaster explained

```
Has a 60% chance of inflicting bonus damage when attacking. Bonus damage is equal to 10% of the target Champion's MAX HP or 4% of the target's MAX HP when attacking Bosses. Bonus damage can only occur once per Skill and does not count as an extra hit.
Damage based on: [Enemy MAX HP]
```

The Warmaster mastery can proc only once when attacking the enemy, even if you’re hitting him 4 times.

## Giant Slayer explained

```
Has a 30% chance of inflicting bonus damage when attacking. Bonus Damage is equal to 5% of the target's MAX HP or 2% of the Boss' MAX HP. Bonus damage can occur on each hit of a Skill, but does not counter as an extra hit.
Damage based on: [Enemy Max HP]
```

As explained, Giant Slayer can proc as many times as you hit the target.

## Your choice

Analyse the attacks of your champion, and take into consideration the following.

Maths can be a good way to solve most of the problems. It, indeed, applies in that case.

When choosing Giant Slayer:

Number of hits | % chance of having at least 1 proc | % chance of not having a proc |
---|---|---|

1 | 30% | 70% |

2 | 51% | 49% |

3 | 65.7% | 34.3% |

4 | 75.99% | 24.01% |

*Calculation method for “% chance of not having a proc at all: 70%^(number of hits).*

*Calculation method for “% chance of having at least 1 proc: 100%-(%chance of not having a proc at all).*

While when using Warmaster, the odds are simple: you always have **60%** chance to have at least 1 proc, and **40%** chance of not having a proc at all.

### Against bosses

The choice is actually quite simple, and it depends on how many hits your attacks perform. The rule is the following: if your champion hits 1 or 2 times, choose Warmaster. If it hits for 3 or 4 times, choose Giant Slayer.

Maths are good to solve this problem, and you can use the table above to prove that.

### Against champions

This applies mostly to the Arena. **Use Warmaster**.

Since you want to have reliable damages, you can be based on the 10% given by the Warmaster, and deduce that to have at least 10% damage with Giant Slayer, you need 2 hits with proc, which based on the 30% proc chance of the mastery, gets a bit complicated (less than 10% if you have 3 hits, a bit more if you have 4 hits).

It’s way less than the 60% chance offered by Warmaster.

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