Blood Rage
How does the Mountain Giant work: what does it cost, and does it count as a leader?
Only one forum reply states this; the official FAQ is not in the cited sources.
- Loophole Master · Community · 2015-10-12
It counts as a Leader. You pay its 3 Rage when you play its upgrade, and after that it invades for free and benefits from Leader upgrades (it may invade for free when you play one).