Part of Casting Spells
To cast a minion spell, you must declare the minion's summoning location. By default, you must choose the surface of one of your sites. Some abilities may modify what summoning locations you may choose. For example, minions with Burrowing may be summoned directly to underground locations you control. The summoning location must be a legal location for that minion to enter at time of casting (regardless of what might happen after the spell is cast and enters the storyline). For example, you could not choose Gnome Hollows as the summoning location of an Autumn Unicorn.