Related:
* Magic

Children:
* Summoning sickness
#

In case the summonables remain through level changes and everything, you should add minions tag as well.

This should not be used when you can teleport creatures or allies to your location from somewhere else.

Should not be used for cases where some spell summons a creature to perform single attack and then disappears, as such cases can be counted as simply fancier magic effects even if it is a form of summoning. The easiest method to see the difference is that if the summoned creature can be attacked too.
#