Assassin's Mark

The aura version of Assassin's Mark

"Assassin's Mark, while not terribly strong on its own, gets incredibly effective in the hands of the right player. A character heavily invested in increased Critical Chance and Critical Damage will absolutely decimate their foes when they afflict them with this weakness. While it's not the most direct of curses, Assassin's Mark stands among the best when utilized correctly."

— Description on the official Path of Exile website

Assassin's Mark is a curse that makes enemies more vulnerable to critical strikes.

Skill Functions and Interactions

Increased Critical Chance: The increase listed on the gem is additive with your current chance to get a critical strike. If you have a 20% chance to critically strike with an attack or spell, and it hits a monster inflicted with level 1 Assassin's Mark, you will have an an additional 5% chance of the strike being a critical one, for a total of a 25% chance.

Increased Critical Damage: The listed extra critical strike damage is multiplicative with the portion of your critical damage multiplier that is over 100%. For example, if your critical strike multiplier is 150% and a monster is inflicted with level 1 Assassin's Mark, any successful critical strike will do 160% of normal damage.

Gem level progression

Template:GemLevelTable |- ! 1 | 24 | 25 | 37 | 24 | 6.00s | | 5% | 16 | 16 | 21% | 0 | 0 |- ! 2 | 27 | 28 | 41 | 26 | 6.20s | 2% | 5% | 16 | 16 | 21% | 118,383 | 118,383 |- ! 3 | 30 | 31 | 45 | 27 | 6.40s | 4% | 5% | 17 | 17 | 22% | 175,816 | 294,199 |- ! 4 | 33 | 34 | 49 | 29 | 6.60s | 6% | 6% | 17 | 17 | 22% | 254,061 | 548,260 |- ! 5 | 36 | 36 | 52 | 30 | 6.80s | 8% | 6% | 18 | 18 | 23% | 359,090 | 907,350 |- ! 6 | 39 | 39 | 56 | 32 | 7.00s | 10% | 6% | 18 | 18 | 23% | 498,508 | 1,405,858 |- ! 7 | 42 | 42 | 60 | 34 | 7.20s | 12% | 7% | 19 | 19 | 24% | 682,057 | 2,087,915 |- ! 8 | 45 | 45 | 64 | 35 | 7.40s | 14% | 7% | 19 | 19 | 24% | 921,777 | 3,009,692 |- ! 9 | 48 | 48 | 68 | 37 | 7.60s | 16% | 7% | 20 | 20 | 25% | 1,727,879 | 4,737,571 |- ! 10 | 50 | 49 | 71 | 38 | 7.80s | 18% | 8% | 20 | 20 | 25% | 1,138,877 | 5,876,448 |- ! 11 | 52 | 51 | 74 | 39 | 8.00s | 20% | 8% | 21 | 21 | 26% | 1,368,233 | 7,244,681 |- ! 12 | 54 | 53 | 76 | 40 | 8.20s | 22% | 8% | 21 | 21 | 26% | 1,638,338 | 8,883,019 |- ! 13 | 56 | 55 | 79 | 42 | 8.40s | 24% | 8% | 22 | 22 | 27% | 1,956,648 | 10,839,667 |- ! 14 | 58 | 57 | 82 | 43 | 8.60s | 26% | 8% | 22 | 22 | 27% | 3,655,184 | 14,494,851 |- ! 15 | 60 | 59 | 84 | 44 | 8.80s | 28% | 9% | 23 | 23 | 28% | 3,017,327 | 17,512,178 |- ! 16 | 62 | 60 | 87 | 45 | 9.00s | 30% | 9% | 23 | 23 | 28% | 7,793,914 | 25,306,092 |- ! 17 | 64 | 62 | 90 | 46 | 9.20s | 32% | 9% | 24 | 24 | 29% | 15,206,031 | 40,512,123 |- ! 18 | 66 | 64 | 92 | 47 | 9.40s | 34% | 9% | 24 | 24 | 29% | 26,185,582 | 66,697,705 |- ! 19 | 68 | 66 | 95 | 48 | 9.60s | 36% | 9% | 25 | 25 | 30% | 62,755,923 | 129,453,628 |- ! 20 | 70 | 68 | 98 | 50 | 9.80s | 38% | 9% | 25 | 25 | 30% | 211,877,683 | 341,331,311 |- ! 21 | 72 | 70 | 100 | 51 | 10.00s | 40% | 10% | 26 | 26 | 31% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |- ! 22 | 74 | | | 52 | 10.20s | 42% | 10% | 26 | 26 | 31% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |- ! 23 | 76 | | | 53 | 10.40s | 44% | 10% | 27 | 27 | 32% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |- ! 24 | 78 | | | 54 | 10.60s | 46% | 10% | 27 | 27 | 32% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |- ! 25 | 80 | | | 56 | 10.80s | 48% | 10% | 28 | 28 | 33% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |- ! 26 | 82 | | | 57 | 11.00s | 50% | 11% | 28 | 28 | 33% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |- ! 27 | 84 | | | 58 | 11.20s | 52% | 11% | 29 | 29 | 34% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |- ! 28 | 86 | | | 59 | 11.40s | 54% | 11% | 29 | 29 | 34% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |- ! 29 | 88 | | | 60 | 11.60s | 56% | 11% | 30 | 30 | 35% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |- ! 30 | 90 | | | 61 | 11.80s | 58% | 11% | 30 | 30 | 35% | class="table-na" style="text-align: center; " | N/A | class="table-na" style="text-align: center; " | N/A |}

Version history

Version	Changes
2.0.0	Mana cost reduced at all levels. Area of effect increases per gem level reduced, but the base area of effect has been increased by 37.5% (from 16 to 22). Normalised the increased duration per gem level.
1.2.0	Renamed to Assassin's Mark, previously Critical Weakness. The 'More critical damage' has been heavily reduced Now grant's a chance to gain a power charge on kill
1.0.0	The bonus to Critical Multiplier has been reduced by a flat 20% at all levels.
0.10.7	Fixed a bug where the additional critical damage applied by Critical Weakness didn't work correctly.
0.9.2c	Fixed a bug where Critical Weakness would prevent critical strikes from doing damage.
0.9.2	Critical Weakness has been added to the game.