Effigy Drop Rate

Here some data Effigy drop rate as your guide. I will sort from the best drop rate to the worse. All data from Kuradal slayer task. The Amount not exactly accurate atleast you can have guide which monster have best drop rate for Ancient Effigy.

Monster / Kill per Effigy

Mithril Dragon / 269
Black Dragon / 280
Steel Dragon / 285
Ice Strykewyryms / 296
Iron Dragon / 386
Black Demon / 395
Dark Beast / 498
Blue Dragon / 654
Jugle Strykewyrym / 747
Bloodveld / 757
Living Rock Creature / 790
Aquanite / 803
Desert Strykewyrym / 880
Warped Tortoise / 898
Waterfiend /918
Abyssal Demon / 1064
Gargoyle / 1109
Greater Demon / 1163
Tzhaar / 1200
Hellhound / 1330
Dagganoth / 1394
Suqah / 1657
Aberrant Spectre / 1703
Nechryeal / 1729
Dust Devil / 2099
Skeleton Wyvern / 2215
Fire Giant / 5712

Effigy drop is rare. So don't sad if you not get 1. If you see the list you will find that high level monster have high effigy drop rate compare to low level monster. So my suggest do Slayer task!!..sooner or later you will get some effigy. Good luck.!!