With Shaman of Spring, though, you get to draw a card while also adding a creature to the table
16 Omarthis, Ghostfire Initiate Manifest Your Deck Away Colorless decks need to dump a lot of mana into something, what with all the powerful mana rocks and lands that can produce extra mana, so why not have a commander that can make use of all that mana
This is that each turn, The One Ring will deal damage to you based on the number of Burden Counters it has
Cards like Tenuous Truce and Baird, Steward of Argive keep opponents from swinging at you and the likes of Bloodrot Apothecary (which pings enemies with toxic damage for each token they sacrifice) can literally kill people with kindness
However, if a meld card leaves the battlefield, the cards will separate and return to being two distinct cards