League-of-legends – Does a hunter’s machete increase damage from smite

True damage does exactly the listed damage, as True Damage is not reduced by armor or magic resistance, nor by any flat or %reduction granted by champion abilities.

In the past, true damage was subject to the same multiplicative modifiers as magical or physical damage -- i.e., doing more on a Hemoplague'd target, less on Alistar's Unbreakable will, etc., however it appears that Riot considers this a bug, as they have been slowly "fixing" true damage dealing reduced effect to Olaf's Ragnarok, or while under Sona's Diminuendo debuff (for example).

The reason this change was made is because smite used to do magic damage, where it was particularly effective against the jungle creeps (who had negative magic resistance, and thus took extra damage from smite). Recently, the mobs were patched to have non-negative magic resistances, so smite lost effectiveness, even though ability itself wasn't changed.

I tested this with Nidalee for traps, then Malzahar for the pet. My runes pages and Masteries were both empty to make sure those had no effect on this test.

Both of these tests were done on the big blue golem at lvl 1 (0MR, 9Armor)

Nid's Trap damage (no machete) - 80(20 per tick) so normal damage since jungle creeps have no MR at the beginning.

Malz pet damage (no machete) - 20 each attack

Trap damage (with machete) - 88(22 per tick) so yes, there is a 10% increase there.

Pet damage (with machete) - 22 each attack, 10% increase here too.

Any other champ tests you want me to do, just leave a comment.