Mana has unlimited possibilities; it can create gods blessings that may be beyond human reason. That's why the battle between mana users is always a battle of information; as much as possible, you have to hide information about your god's blessing before you can make a surprise attack.
One of Ivaylo's abilities is pain and malice, a combination of Mary's rampage skill and Ivaylo's god's blessing. This ability can make her enemy die 100% tortured inside Mary's body. But the conditions for using it are too strict. He had to create a doll similar to his opponent's. If the opponent wears different clothes, the ability will not activate, so the only way to create it is while fighting. What about the percentage of resemblance? The resemblance between the puppet and the real person is only based on Ivaylo's preference. If Ivaylo thought it was the perfect result, his god's blessing could work. So Ivaylo has to take each doll seriously.