He FORCES your opponents to waste resources, he is a key stax piece for resource denial, forced resource mis-management, and he can also allow for your beaters to stick around more, by forcing removal spells to be used on him instead of something like Consecrated Sphinx or similar
Splitskin Doll For 2 mana and with another creature with power 2 or less in play, you get to draw a card, but I like being able to run this creature in a reanimator or madness deck that can maximize its discard ability
Their listings usually include scans and details about the cards history, especially for rare Gamma and Delta playtest cards
I feel like the player base, myself included, has overhyped it a bit
Thanks to that, it was included as a promo in Golgari's prerelease kit
But remember that you don't want to sell your cards for less than the actual Magic: The Gathering card value