If an effect adds additional combat phases to a turn and a creature with a boast ability attacks more than once during that turn, its boast ability can still be activated only once
Begin by exerting a character of your choice, and choose an exerted character card controlled by your opponent to be your target
You'll need a lot of protection spells, though, because this commander will be a removal lightning rod
Then it was elevated to a proper, full set with The Lord of the Rings: Tales of Middle-Earth , based on Tolkiens Legendarium
This is especially useful for attacking down the Battle and not falling too far behind on the crackback
If Gau is no longer on the battlefield when its last ability resolves, use its power as it last existed on the battlefield to determine how much damage the ability deals