Legality depends on the tournament format -- Loxodon Warhammer can be legal in some formats and banned or restricted in others
Creature - Elf Shaman Color tag templates(None) Harald, King of Skemfar Menace (This creature can't be blocked except by two or more creatures.) When Harald enters, look at the top five cards of your library
Sunpearl Kirin, for example, can create soft loops that keep your board flowing with extra value and card advantage
That said, this commander wont do much else for you so this card may be better off in the 99 of a Sythis, Harvest's Hand deck
The main issue was that you had to pay to cast the card and then pay again to cycle it, which made it clunky as a draw-smoothing tool
I gotta admit, though, Eidolon of the Great Revel is cute with Stoke the Flames No Act on Impulse