Hey Ainu, thanks for the tests and replies.
First, there is NO way this is Trance land rate inside olympiad. I have played numerous matches against SE/EE/Cardi (mostly Tyrake's chars) with the following classes: Spellsinger, Doombringer, Tyrant, Sorceror.
All chars have passive skill Wisdom enchanted to +15 on the sleep resistance route. Always wearing Necklace of Valakas and White talisman of Attention against a Trance class. What I can tell you is this:
On spellsinger/sorceror it might be close to the number you are saying, but on Doombringer there is definitely NO CHANCE this is the true land rate. It feels way, way more, closer to 50% or even higher on my Doombringer. I will try to record a match asap and provide actual proof, but if you could, please test with some other class other than paladin!
Also, tell us your dyes and your con/wit/int stats on the chars you're testing, thanks!
I would suggest testing with Shilen Saint and Doombringer next, like this:
Shilen Saint: Necklace of Valakas, Antharas, B.Zaken, Beleth, Impr. Baium, Mid/Top s84 mage weap, Elegia +6, wit+4 men-4, con +4 str-4, dex+4 str-4 dyes
Doombringer: Same jewels, Elegia set, wit +4 int-4 dyes and White talisman of Attention equipped.
I would do tests on all conditions: Oly buffs, no buffs, full buffs.
The reason i'm suggesting this test is because from all the Trance classes, Shilen Saint has the most INT, which is supposed to be the stat affecting debuff land rate. I am not sure how this works here, but I definitely feel like Shilen Saint is landing it way more. On the other hand, wit is supposed to affect debuff resistance, and that's why I said to test with the dyes players actually use, it might look completely different compared to no dyes at all.
Looking forward to the results, thanks!
P.S. I would really like Tyrake's honest contribution to this, he has used Trance more than anyone and can provide reliable info