I paused the Dicetower review to read this card, and I'm not sure I understand it. It has channeling so it provides its own mana, but also gets mana when an opponent does something. No problem so far. The part I don't get is whenever you get 3 mana on it you can summon a creature. Is this different than other spawnpoints? I don't recall a threshold on Lair for example. So let's say you have 3 mana, is this creature now free or do you still make up the difference? Basically, I'm confused as to why there's a threshold on summoning when none of the other spawnpoints seem to have one.