It does sound like a good idea. However, the more Evan think about it, the more it falls apart. Usually, abilities gets past down from bloodlines, either from mother, father, or both. While most gets only one ability, there are the very, very few that could get both.
Evan doesn't really know much about it at the moment, but from what he noticed, some of his friends ability were from their parents.
That was the only explanation he had and he had no other evidence that proves otherwise. It might not be in any way a solid truth. So, he knew that he is lacking in that knowledge.
'I think I need to do a bit more reading about the rarity of summoners first.' Evan replied to Iva mentally.
His eyes still closed as he pretends to meditate. 'That way, I don't just suddenly know summoning ability when my parents are elemental types of water and wind.'