A commander can be any legendary creature (so long as the creature isnt on the banlist)
Personally, I play this card in Commander decks that care about manipulating the top of my deck
There is a risk that this may happen, but if your entry point is low enough then at least you wont feel so awful if you have to go this route
Often, they let opponents choose if they get a bonus, but if they do, theres a cost
Ive always despised the Snow mechanic, mostly for what it does to my fancy collection of (non-Snow) basic lands
Ashcoat of the Shadow Swarm Broken Visage Cutthroat il-Dal Dauthi Cutthroat Dauthi Embrace Dauthi Ghoul Dauthi Horror Dauthi Jackal Dauthi Marauder Dauthi Mercenary Dauthi Mindripper Dauthi Slayer Dauthi Trapper Dauthi Voidwalker Dauthi Voidwalker Dauthi Warlord Death's Shadow Dragon Shadow Embrose, Dean of Shadow Faceless Devourer Knight of Dusk's Shadow Misery's Shadow Nether Shadow Nether Traitor Nezumi Shadow-Watcher Perilous Shadow Shadow Guildmage Shadow Stinger Shadow, Mysterious Assassin Stronghold Overseer Stronghold Rats Traitor's Clutch Trespasser il-Vec Urborg Panther Vashta Nerada