@ApollosarcherSo to start getting into the nit picky stuffs. No, summons do not drain a summoners power, they live on our world, (a mixture of all the elements) so they have to adjust living here first. (Hence why the extra dimension under your bed) Aside from that, you will eventually be given a license that tells you were and were not you can't take you summon. You'll get an A-License seeing as how Auriel won't cause any damage no matter where she walks. (these are for people with fire elementals and such) Once the summon has adjusted living in this new world, it will go back to its own. This change is when summoners need to start using their own power to bring forth their summon. You will have to rip open a portal between the dimensions in order to summon your monster. Once summoned, the monster will use its own energy to fight and move around in our world. Eventually summons will adjust enough to live for days on this world before needing to go back to theirs. I have more information, but that should be good for now.
Phew.