FrogReaver
The most respectful and polite poster ever
I think if I was going to try and grant additional concentration it would be done by making the act of concentrating on 2 spells inherently more dangerous. So I propose
Channel.Channel: The Character is able to stop everything they are doing and cast and concentrate on another spell that requires concentration without ending either spell. This requires so much focus that the caster cannot otherwise act or move. He also becomes unable to take reactions. He may stop channeling at any time on his turn. When he stops channeling only the channeled spell ends. A failed concentration check ends both spells. The only actions the character can take are actions directly related to the spells he is concentrating on.
