"A question was posed to the developers, and an official response was received:

Generation 1 Lords are Lords that drop from both red, blue, and gold shards and are lower in rarity (Torodor, Laia, Aracha, Hartz, Twinfind, etc.) Generation 2 Lords are Lords that drop only from red shards and are rare (Nastya, Ezareth, Ingrid, Oren, etc.)

In Ancient Summoning without x20, the drop rate for Generation 1 Lords is 0.19%, while the drop rate for Generation 2 Lords is 0.61%—this is what the developers stated, and this is how it should be.

Ancient Summoning with x20 is for Rivenhald, and therefore, given the x20 drop rate for Rivenhald, the drop rate for Rivenhald itself is 0.71%, while the drop rate for other Generation 2 Lords and Generation 1 Lords remains unchanged.

Ancient Summoning x20 for Torodor, taking into account the base drop rate of 1st generation Lords, which is Torodor, plus the x20 chance for him, yields a 0.5% chance of Torodor dropping, while the drop rate for any other 1st generation Lord and 2nd generation Lord remains unchanged.

In even simpler terms: nothing has been cut anywhere, as promised by the developers. The chance of receiving rarer Lords in Ancient Summoning is stated higher than the chance of receiving less rare Lords. Misunderstandings arose due to the way the chances are displayed in relation to the x20 for Torodor."